On Wednesday, Choo added his name to the seeming endless list of ailing Indians with what the team described as "left trunk soreness."
Choo tweaked his left side and back during his final at-bat in the nightcap of Tuesday's doubleheader. He was originally penciled into Wednesday's lineup, but was removed shortly before the game after going through a pregame hitting routine in the batting cage.
"Swinging is no problem, but taking pitches hurts," Choo said. "That's a weird thing, but I talked to [head athletic trainer] Lonnie [Soloff], and he said trying to hit a 94-95 mph fastball during the game could make it worse."
Choo said taking a full swing gives him no trouble. It's when he starts his motion and stops that he feels uncomfortable.
"Right before the game, we didn't think it was worth it to take a chance," Tribe skipper Manny Acta said. "He's day to day. He's going to come in and get some treatment [on Thursday], and then we'll see if he can play Friday."
It was an unfortunate twist of fate for a team fighting a slew of injuries.
Choo joined a list of walking wounded that includes center fielder Grady Sizemore (right knee), designated hitter Travis Hafner (right foot), second baseman Jason Kipnis (right hamstring) and outfielder Michael Brantley (right wrist).
Asdrubal Cabrera was also out of Wednesday's lineup, though it was a scheduled off-day for the shortstop.
Choo has played just 10 games for Cleveland since returning from the 15-day disabled list, following a seven-week recovery from a fractured left thumb.
In the afternoon portion of Tuesday's doubleheader against the Mariners, Choo launched a three-run home run in the ninth inning to send the Tribe to a dramatic 7-5 walk-off victory. Since coming off the DL, Choo has hit .372 (16-for-43) with three homers and eight RBIs.
On the season, Choo has hit .262 with eight homers and 36 RBIs in 82 games.