"We don't know the full extent of it; we know it was enough to go on the DL. He wasn't walking very good," White Sox manger Robin Ventura said. "We know he's not going to be with us for at least a couple weeks."
Ventura and pitching coach Don Cooper would not name a new closer, as they said a variety of relievers could fill the role in the interim.
"As of now, we're not just going to name a closer," Ventura said.
Ventura said Javy Guerra, called up to take Lindstrom's spot in the bullpen, was unlikely to fill the void.
"It's probably a reach, with the guys that have already been here, and have proven that they've kind of gotten into a groove of pitching well up here," Ventura said.
The White Sox called Guerra up from Triple-A Charlotte, where he recorded three saves in 14 games. Guerra served time as the Dodgers' closer in 2012 and 2013, but was signed off of waivers by Chicago before the start of this season.