New York Yankees center fielder Trent Grisham exited Wednesday's game against the visiting Toronto Blue Jays because of left knee discomfort.

The Yankees said he was checked out by team physician Dr. Christopher Ahmad and will undergo further testing.

In the second inning, Grisham hit a pop up off Trey Yesavage that fell between left fielder Yohendrick Pinargo and third baseman Kazuma Okamoto.

Grisham jogged slowly to first base as he thought the ball was going to get caught. He accelerated to second when it was not fielded and appeared to be running awkwardly.

Grisham exited after the Yankees batted in the fourth and was replaced by rookie Spencer Jones, who played most of his minor league games in center field.

Grisham is hitting .174 with six homers and 27 RBIs in 49 games this season. He hit .235 with 34 homers and 74 RBIs last season and accepted the one-year $22.5 million qualifying offer to return to the Yankees in the offseason.