Choo hadn't felt any pain when taking batting practice Friday and Saturday, but he said that changed after he swung and missed at a fastball during Saturday's game.
"Every step of my foot on the ground, it hurt," Choo said. "Everybody saw in the dugout my body language. [Head athletic trainer] Lonnie [Soloff] wanted me to come out of the game. I said, 'Lonnie, give me a couple innings.' If I come out of the game, I know I'm not coming back for a couple days. Then after an inning of defense, I came back in the dugout and came out of the game."
Choo said Monday that he hoped to swing a bat by the weekend. That could be put on hold.
"If I swing a bat, I'll know quick," Choo said. "As soon as I swing a bat, if I feel good, I'll be back."
Choo's placement on the DL is retroactive to Sunday, so the 29-year-old is eligible to return on Sept. 12. It's his second stint this season; he missed seven weeks after a fastball from San Francisco's Jonathan Sanchez shattered his left thumb.
To replace Choo on the roster, the Indians recalled left-handed reliever Nick Hagadone from Triple-A Columbus. Major League guidelines stipulate that any player optioned can't be recalled for 10 days unless replacing a player put on the DL. Hagadone was sent down on Sunday, so he wouldn't have been eligible to rejoin the club until Wednesday.
"I really wasn't expecting to be called up," Hagadone said. "I was actually asleep on the bus and the manager woke me up and told me I was coming up."
Choo is batting .260 with eight homers and 36 RBIs in 84 games.
The Indians also called up pitcher Corey Kluber from Columbus, where the right-hander was 7-10 with a 5.65 ERA in 26 starts. Beginning Thursday, Major League teams can expand their rosters to as many as 40 players.
Kluber was scheduled to pitch Wednesday for the Clippers, but he was scratched without being given a reason.
"They told me it was a possibility that it was because I was getting called up," Kluber said. "They told me they would have news for me by 10:30 p.m. if I was getting called up, and of course the game didn't end until [after midnight], so it took a little longer to find out."
Right-hander Josh Judy will also be recalled and accompany the Indians on their trip to Kansas City this weekend.