I noticed he came out of the game yesterday in the last inning. McKenna was in CF when the Braves won the game.
Maybe he tweaked something, but I thought at the time it was just a double switch to get the pitcher's spot as far away as possible if the game went to the 13th. They lost the DH as a result of pinch-running McKenna for Urias (Mateo had PR for Santander earlier in the DH spot and he had to move into the field when Urias left the game).