Atlanta Braves shortstop Ha-Seong Kim has struggled at the plate since being activated from the injured list 10 days ago, but he broke out of a hitless skid by going 1-for-4 with an RBI single and a walk on Wednesday. Kim is now 2-for-23 with three walks and five strikeouts this year, and his .225 xwOBA suggests that he's been only a little unlucky. Kim isn't a major power or speed threat, but the 2023 season was proof that he's capable of slugging 15+ homers and swiping 35+ bags. We don't see him returning to that level of production this year, but perhaps Wednesday's RBI base knock is a sign of him tapping into a little more offensive upside. He's worth monitoring in fantasy baseball leagues so far, especially since he has eligibility at both shortstop and second base in some formats. With that said, it's a bit too early to add him off the waiver wire, especially since he's still available in 98% of leagues. He ranks as the #33 shortstop in RotoBaller's rest-of-season fantasy baseball rankings.

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Chicago Cubs outfield prospect Kevin Alcantara continues to show intriguing power potential for the Iowa Cubs, belting his Triple-A-leading 15th home run on Wednesday. The 6-foot-6 slugger has reached base safely via hit or walk in 20 straight games, during which time he's gone 22-for-80 (.275), pushing his season average to .245 with a .909 OPS. Swing-and-miss has long been his bugaboo, and this year is no different, carrying a 33.0 percent K% and 15.0 percent swinging-strike rate, but it is offset by the prodigious power and strong walk rate of 11.4 percent. The Dominican is already on the 40-man roster, having briefly spent time with the big league club in both 2024 and 2025, so with the way he's hitting, the right-handed hitter should be next in line when the team needs an outfielder. The 23-year-old carries batting average risk for fantasy, but the power is undeniable, making him one of the top hitters to stash for his home run upside.

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Arizona Diamondbacks outfielder Lourdes Gurriel Jr. has been hitting the ball well lately, and he's worth adding off the waiver wire in many fantasy baseball leagues. Over his last six games, Gurriel is 10-for-25 with one home run, two doubles, four RBI, one walk, five strikeouts, and one stolen base. This year, he owns a .230/.292/.310 slash line. While those marks aren't ideal, they're several points better than they were last week. He also has an 8.3% walk rate and a 18.8% strikeout rate. With just one homer and one steal this year, we haven't seen a whole ton of power or speed from Gurriel. However, he's started to deliver more extra-base hits, and he could be turning the corner as a fantasy-relevant outfielder. He's available in 97% of leagues, representing a solid mid-season waiver wire addition for managers in deeper leagues.

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Cleveland Guardians outfielder Angel Martinez is having a solid season at the plate, and his power surge is enough to justify adding him off the waiver wire in fantasy baseball. Martinez homered 11 times across 139 games last year, and he's already up to nine homers through just 48 games this year. He also has 18 stolen bases, as well as a career-high eight stolen bases. So far, he's slashing .263/.305/.500 with a 4% walk rate, 19% strikeout rate, and 124 wRC+. We'd like to see the K/BB ratio improve, but we're certainly impressed by his power and speed. He also has the ability to play all three outfield spots, which helps get him in the lineup on an everyday basis. Martinez currently ranks as RotoBaller's #61 outfielder, and he is available in approximately 50% of fantasy baseball leagues.

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Milwaukee Brewers infield/outfield prospect Jett Williams is heating up again at Triple-A Nashville, going 10-for-28 (.357) over his last eight games, with three doubles, two triples, two home runs, and a stolen base, along with an 8:9 BB:K over that span. The Brewers' third-ranked prospect is now slashing .254/.380/.420, with a strong 15.1 percent walk rate (21.0 percent K%) and 11 steals, while his 38 runs scored is third-most in Triple-A's International League. The former first-rounder is making his case at the plate for a call-up to the majors, and with the ability to play 2B, 3B, SS, and center field, the 22-year-old's versatility should give him multiple paths to the majors and added appeal for the organization when it comes time to decide who to bring up from the farm in the coming weeks. The right-handed hitter has shown decent pop and speed, and along with his multi-position eligibility (2B, SS, OF) on Yahoo!, he makes for a worthy stash in deep leagues.

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Washington Nationals starting pitcher Foster Griffin has hit a bit of a skid lately, but the underlying metrics suggest that he's a bounce-back candidate, which bodes well for his rest-of-season fantasy outlook. Griffin has allowed 14 earned runs over his last 9.1 innings of work, but he has still maintained a solid 4.02 ERA across 10 starts. More importantly, he has a 3.84 xFIP with 8.68 K/9 and 2.89 BB/9 so far. Home runs have been his kryptonite to this point; allowing 1.61 HR/9 is a primary reason why he's been roughed up lately. He allowed just 0.12 HR/9 in the NPB last year, so fantasy managers should be optimistic that he'll crack down on loud contact sooner rather than later. He has hung around as the #76 starter in RotoBaller's latest fantasy baseball rankings, and he's a solid waiver wire option as he remains available in 60% of leagues.

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San Diego Padres shortstop Xander Bogaerts is an intriguing waiver wire option for fantasy baseball managers as he shows off increased power. Bogaerts hit just 11 homers in each of his last two seasons, but he's already up to seven homers through just 48 games this year. Although he has hit a bit of a lull lately (.160/.192/.160 slash line over his last seven games), the power surge is enough to justify adding Bogaerts off waivers. Outside of the recent skid, he's having a solid season with a .247/.318/.385 slash line, seven homers, seven steals, a 9% walk rate, an 18% strikeout rate, and 104 wRC+. He is still available in 48% of leagues, and he ranks #19 among shortstops in RotoBaller's latest fantasy baseball rankings.

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New York Mets pitching prospect Jack Wenninger could be next in line the next time the team needs to fill a rotation spot. The organization went with Zach Thornton on Wednesday to fill the void left by the injury to Clay Holmes (fibula), with the southpaw lasting just 4 1/3 innings after piling up 80 pitches, allowing four earned runs on four hits and two walks while striking out three in the outing. Wenninger has been impressive at limiting damage at Triple-A, allowing just one home run in eight starts and stranding 87.7 percent of runners, leading to a 1.51 ERA. However, the right-hander owns a gaudy 14.6 percent walk rate (11.3 percent K-BB%), has hit four batters, and a 3.88 FIP suggests the results have been better than expected. Still, averaging more than a strikeout per inning (9.84 K/9) gets our attention in fantasy, and if he can find similar success in the majors, then the 24-year-old would be a viable fantasy asset. View the 6-foot-4 hurler as one of the top pitching prospects to stash given his likelihood of a call-up in the not-too-distant future.

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The Miami Marlins are calling up third baseman Graham Pauley from Triple-A Jacksonville on Thursday after they placed infielder Leo Jimenez (neck) on the 10-day injured list after he was injured on Wednesday night, according to Kevin Barral of Fish on First. The 25-year-old Pauley was demoted to the minors after going 13-for-75 (.173) with a homer, six doubles, nine RBI, eight runs scored, a stolen base, five walks, and 19 strikeouts in his first 28 games for the Fish in 2026. At Jacksonville, Pauley wasn't a whole lot better, batting .222 (8-for-36), but with three home runs, two doubles, six RBI, six runs scored, a steal, five walks, and nine strikeouts across nine games and 41 plate appearances. At best, Pauley will be on the strong side of a platoon at the hot corner in South Beach for the Marlins now that he's back in the big leagues. Only fantasy managers in NL-only leagues should be considering picking Pauley up as corner-infield depth. In 103 major-league games, Pauley has slashed .198/.268/.340 with a .607 OPS, seven home runs, and 25 RBI.

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The Miami Marlins acquired outfielder Rece Hinds from the Cincinnati Reds on Thursday in exchange for right-hander Zach McCambley, according to Isaac Azout of Fish on First. The 25-year-old Hinds will now head to the National League East after the Reds designated him for assignment last week. The former second-rounder in 2019 will report to Triple-A Jacksonville. He offers elite power/exit velocity, but also swings and misses quite often. He hit only 121 (4-for-33) with one walk and 18 strikeouts in 12 games this season in Cincy and also batted .116 (5-for-43) with a walk and 21 strikeouts in 15 games for the Reds in 2025. Hinds has seven home runs and 19 RBI in his 51 big-league games, but he's also sporting a 42% strikeout rate and 4.6% walk rate, which isn't conducive to long-term success. In 23 games for Triple-A Louisville in 2026, Hinds has hit .306/.423/.635 with seven homers. In NL-only leagues, Hinds is worth a look off the waiver wire for his raw power, but in mixed leagues, he can continue to be ignored. He's currently not rostered at all in any Yahoo leagues.

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Milwaukee Brewers left-handed pitching prospect Robert Gasser has been rewarded with another start in the big leagues and will pitch on Friday in an NLCS rematch against the Los Angeles Dodgers, according to Adam McCalvy of MLB.com. Gasser, 26, made his season debut on May 17 against the Minnesota Twins and allowed three runs (two earned) on three hits while walking two and striking out three in four innings for a no-decision. He also hit three batters. For at least one more start through the rotation, right-hander Chad Patrick will remain in the bullpen. Gasser can probably be left on the waiver wire for now in most fantasy leagues. Even if he pitches well in a very difficult matchup this weekend -- the Dodgers lead baseball with a .776 OPS -- Gasser could be ticketed for a trip back to Triple-A Nashville with veteran right-hander Brandon Woodruff (shoulder) inching closer to a return from the injured list. Gasser has impressed in his eight MLB starts, dating back to 2024, though, posting a 2.87 ERA, 1.14 WHIP, and 24:7 K:BB across 37 2/3 innings.

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Colorado Rockies right-handed reliever Juan Mejia blew his first save opportunity of the season in Wednesday's 5-4 loss to the visiting Texas Rangers at Coors Field, allowing a hit and striking out one in two-thirds of an inning. The two runs that scored were charged to lefty Brennan Bernardino, who started the inning. It wasn't exactly the 25-year-old Dominican's fault, as he entered the contest in Denver with the bases loaded and one out. Mejia hasn't allowed an earned run in his last seven appearances since May 5, a span in which he has thrown 8 1/3 scoreless innings with three hits allowed, four walks, 11 strikeouts, two saves, one blown save, and a hold. Right-hander Antonio Senzatela should remain in the mix for saves in Colorado going forward, but Mejia's first blown save of the year on Tuesday shouldn't negatively impact his save chances in Colorado, and he's probably still the best option for saves with the Rockies for fantasy managers. In his second year with the Rockies, Mejia has a 3.80 ERA (3.36 FIP), 1.48 WHIP, a career-high three saves, 28 strikeouts, and 11 walks in 23 2/3 innings.

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Boston Red Sox left-handed closer Aroldis Chapman has not looked his age (38) at all in 2026 in his second year with the team. The veteran southpaw threw a scoreless inning with one hit allowed and one strikeout to close out the Kansas City Royals in a 4-3 victory, and he now has 12 saves, a minuscule 0.51 ERA (1.86 FIP) and 0.85 WHIP with 23 strikeouts and seven walks in 17 2/3 innings of relief in his 17th year in the big leagues. Surprisingly, Chapman has been one of the best relievers in baseball so far through the quarter mark of the 2026 season, and he's currently on a scoreless streak of 13 2/3 innings, a span in which he has allowed six hits, walked six, struck out 20, and recorded 10 saves for the BoSox. He currently ranks fifth in the majors with his 12 saves, but how much longer can he continue to outduel Father Time? With an xwOBA in the 68th percentile and a hard-hit rate in the 10th percentile, regression will most certainly come for the Cuban hurler eventually. His expected ERA also sits at 3.09 despite being in the 96th percentile in strikeout rate. Chapman still has enough swing-and-miss stuff to be a strong closing option for fantasy managers, but he's also a clear sell-high candidate.

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Pittsburgh Pirates right-hander Jared Jones (elbow) will make his next minor-league rehab start on Saturday for Triple-A Indianapolis, according to Colin Beazley of the Pittsburgh Post-Gazette. General manager Ben Cherington said on Sunday that Jones would make "at least one" more rehab start, so Saturday could be his last rehab outing before rejoining the Pirates' major-league starting rotation. He will be eligible to come off the 60-day injured list after that. Despite missing all of the 2025 season due to elbow surgery, Jones is one of the best arms to stash in fantasy baseball leagues, and he's only rostered in 37% of Yahoo leagues right now. He got up to 52 pitches and 4 1/3 innings in his last rehab start, and he's looked solid in his four starts with Indy, Single-A Bradenton, and Double-A Altoona, posting a 1.88 ERA and 0.98 WHIP with 18 K's and only three walks in 14 1/3 frames. Jones was a second-round pick in 2020 and impressed in his first 22 major-league starts as a rookie in 2024 with 132 punchouts and 39 walks in 121 2/3 innings pitched.

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Even though Cincinnati Reds third baseman/outfielder Noelvi Marte is still in the minors, he should be attracting some interest off the waiver wire due to a recent hot stretch at Triple-A Louisville. In his last 25 games with the Bats, Marte has gone 41-for-103 (.398) with six home runs, 22 RBI, and eight stolen bases. The 24-year-old Dominican is hitting .383/.436/.583 overall at Louisville with a 1.019 OPS, six home runs, 22 RBI, eight steals, and 24 runs scored in 30 games across 133 plate appearances. The Reds sent Marte down to the minors in the middle of April after he went 4-for-29 (.138) with two walks and 10 strikeouts in his first 11 games in Cincy. Based on how he's hitting currently on the farm, the Reds are probably considering calling Marte back up to the big-league club. In a career-high 90 games in Cincy last year, Marte hit .263 (89-for-339) with 14 homers, 51 RBI, and 10 steals. Fantasy managers in need of some power and speed in deeper leagues should consider adding Marte, who is only rostered in 28% of Yahoo leagues at the moment.

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Detroit Tigers left-hander Tarik Skubal (elbow) threw a 35-pitch bullpen session on Thursday morning, according to Evan Woodbery of MLive.com. Skubal said he treated it more like a "start" than a between-start bullpen, and he increased the intensity and hit the velocity target he set at the end. The back-to-back American League Cy Young winner didn't have any symptoms following surgery on his left elbow to remove loose bodies, and he continues to be very enthusiastic about his progress. Manager A.J. Hinch shot down rumors that Skubal could skip a minor-league rehab assignment altogether and return to the team's starting rotation next week. However, Skubal has now thrown off a mound three times since having surgery two-plus weeks ago, so it wouldn't be entirely impossible for him to start a rehab assignment at some point late next week if he's feeling good. The 29-year-old southpaw is making excellent progress, and in a best-case scenario, he might come off the 15-day injured list in early June. Skubal has added incentive to make it back as soon as possible to try to increase his trade value before August's deadline. He signed a one-year, $32 million deal with Detroit in February of this year, so he'll be a free agent at the end of the 2026 season.

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Kansas City Royals right-handed reliever Lucas Erceg has by no means been excellent at the back end of the team's bullpen so far in 2026, but he remains the best option for saves with veteran right-hander Carlos Estevez (foot, shoulder) still sidelined. Erceg blew his third save of 2026 on May 15 against the St. Louis Cardinals, but he rebounded with his 11th save (tied for sixth in the majors) on May 17 against the Cardinals, throwing a scoreless inning with one walk. The 31-year-old former second-round pick by the Milwaukee Brewers in 2016 out of Menlo College has been more reliable in May as well, allowing two runs (one earned) on five hits while walking three and striking out seven for a win, four saves, and one blown save. His most recent save against St. Louis was his first save since May 5. Overall, Erceg has a 3-1 record, 3.26 ERA (3.37 FIP), 1.45 WHIP, 11 saves, 17 strikeouts, and 13 walks in 19 1/3 innings out of the bullpen. He should deserve more waiver-wire consideration -- he's rostered in 60% of Yahoo leagues -- and he could even continue to pick up save chances when Estevez comes off the injured list.

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Houston Astros catcher Yainer Diaz (oblique) is currently on the 10-day injured list due to a left-oblique strain, but fantasy managers looking for an upgrade at the catching position may want to consider picking him up off the waiver wire as he nears a return. When healthy, the 27-year-old Dominican backstop is Houston's starting catcher. Diaz lacks plate discipline -- he sports a 3.5% walk rate in his four-plus seasons in the majors -- but he's also displayed above-average power at the position over the last three seasons. From 2023 to 2025, Diaz hit .279/.306/.455 with a .761 OPS, 59 home runs, and 214 RBI in 395 regular-season games across 1,563 plate appearances. In 26 contests before injuring his oblique muscle this year, Diaz had gone 24-for-101 (.238) with two long balls, 14 runs scored, and seven runs scored over 106 plate appearances. He's not the best target in leagues that count on-base percentage, but at least in two-catcher leagues, Diaz has value. He's currently rostered in 44% of Yahoo leagues and is worth a look on the waiver wire as he nears a return to the big leagues.

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Baltimore Orioles second baseman Jackson Holliday suffered a fractured hamate bone in his hand back in February and required surgery, putting him on the injured list to start the 2026 regular season in late March. The 22-year-old former first overall pick in 2022 then had multiple setbacks while on a minor-league rehab assignment, which is why he didn't make his season debut until this week against the Tampa Bay Rays. Holliday has gone hitless in his first four plate appearances with the O's with three strikeouts, and he also struggled while in the minors, slashing .176/.291/.284 with a homer, five RBI, six runs, one steal, 10 walks, and 23 strikeouts in 22 rehab games with High-A Frederick, Double-A Chesapeake, and Triple-A Norfolk. Fantasy managers shouldn't forget that Holliday came three home runs and three steals shy of a 20-20 season in 2025 in what was his first full year in the big leagues. He's still a developing young player with plenty of power/speed upside; it might just take him a bit to get back in a rhythm. Holliday is worth stashing for his upside as Baltimore's starting second baseman, and he's only rostered in 40% of Yahoo leagues at the moment.

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Los Angeles Dodgers left-handed reliever Alex Vesia allowed three earned runs in just one-third of an inning in a loss to the division-rival San Francisco Giants on May 11, but in four appearances since then, he's bounced back by throwing 3 2/3 scoreless innings with one hit allowed, one walk, six strikeouts, and a hold. The 30-year-old veteran southpaw has only been scored on in two of his 21 appearances out of the Dodgers' bullpen so far this season, and he currently holds a 2.65 ERA (1.81 FIP) and 0.94 WHIP with 23 strikeouts, eight walks, and four holds. Vesia has also locked down two saves, although his last save came back on April 14. He clearly has manager Dave Roberts' trust in high-leverage situations, and more save opportunities could come with closer Edwin Diaz (elbow) out for an extended period of time. At the very least, Vesia is worth a look in deeper fantasy leagues that count holds, as he will continue to be deployed in late-inning, high-leverage spots. He's only rostered in 21% of Yahoo leagues.

From RotoBaller