White Sox shortstop Tim Anderson will be placed on the injured list after leaving Sunday's game against the Cubs with a strained right groin.

"This guy is as good as anyone in the game at that position, in all regards," manager Tony La Russa said after his team's 5-4, 12-inning victory over the Cubs. "We're not nearly as good without him, but we're going to have to be good enough to win."

La Russa indicated that the severity of the injury will be known after an MRI on Monday.