Mike Trout left Tuesday's game versus the Astros with mid-back discomfort. It's the same injury that kept him out of action for two games over the weekend. Trout underwent stem cell therapy on his back during the off day Monday and returned to action Tuesday but lasted just 1 1/2 frames before being pulled. More should be known about his status after the game, but it's possible the game's best player is headed to the disabled list.