Houston Astros left fielder Yordan Alvarez, shortstop Jeremy Pena injured in outfield collision

NEW YORK -- Houston Astros left fielder Yordan Alvarez and shortstop Jeremy Pena are both being evaluated for concussions after they collided in the eighth inning of Wednesday's game against the New York Mets while running down a popup.

With Pena shifted to the right side and the game scoreless, Dominic Smith popped the ball into short left. Both players called for the ball, and as Pena caught it, each hit the other in the face with his glove.

Both fell to the field and needed assistance. Alvarez was removed on a cart, sitting up, and Pena walked back to the dugout. They flew back to Houston with the team but neither were in Thursday night's lineup against the New York Yankees.

In Wednesday's game,Chas McCormick replaced Alvarez, and Mauricio Dubon took over for Pena, who initially wanted to remain in the game.

Play resumed after a delay of about eight minutes.

The Astros won the game 2-0 to give aceJustin Verlander(10-3) his major league-leading 10th win of the season.

The Associated Press contributed to this report.