Choo aggravated his left hamstring while running the bases in the sixth inning in Tuesday's game. He had felt some soreness before the game, but he didn't think that it was serious until it became worse in the sixth.
By the eighth inning, the pain convinced him to leave the game. The injury kept him out of the starting lineup in Thursday's game to give it time to heal.
Choo hopes to rejoin his team and play within a few days, but he may not be ready for the three-game series against the Angels that begins today.
He was smart to take himself out of the lineup to give it time to heal. The last time that he was injured, he pushed himself too hard and it led to him being out for the rest of the season.
Choo said to MLB.com, "I've never had my hamstring hurt that much in my baseball career. It's tightness, so maybe it's OK. I've had tightness many times before during the season, but not that sore. It was the first time I felt like that with my hamstring, so I shut it down."
Choo claimed that he feels better already, but rushing back could be detrimental to his season like his oblique injury was last season. He attempted to go back too soon and re-injured his oblique, keeping him out for the remainder of the season.
Assuming that this injury is as minor as he thinks, Choo should be back on the field by next week.