His first season with the Twins got off to a promising start. Walters went 2-1 with a 2.96 ERA in his first four starts, but he struggled before succumbing to injury, going 0-1 with a 12.54 mark in his final three starts.
He has since made eight rehab starts for Triple-A Rochester, going 3-3 with a 4.01 ERA.
"He didn't throw the ball great in Triple-A," Twins manager Ron Gardenhire said. "But I think it was about building arm strength and all those things. Now, he's going to have to get back to locating and using his breaking ball."
While the numbers weren't stellar, Walters called his rehab assignment a positive step in his return.
"I threw 90-something pitches on Thursday," Walters said. "I'm cleared and ready to go. I think part of the rehab assignment was knocking the rust off. I hadn't been out in a while, getting back into the swing of things.
"You don't realize how quick control and everything kind of goes away when you're not playing every day."
Injuries haven't plagued White Sox starter Jake Peavy this season. Instead, the right-hander has recently been the victim of misfortune and poor run support, and has struggled to find himself in the win column because of it. The lack of winning decisions hasn't been entirely his fault, as he's gone 1-3 over his last six starts despite a 3.73 ERA.
However, that last win did come against the Twins on Aug. 1. Peavy limited Minnesota to two runs on five hits over eight innings in a 3-2 Chicago victory. It certainly went better than his last start, which saw him shelled for six runs on nine hits in six innings by Detroit on Friday.
"I didn't have much," Peavy said. "It was a battle from the start. I didn't have good location. I didn't have great stuff. But I was trying to battle and trying to keep us in it."
Twins: Escobar hurts former team
Freshly recalled from Triple-A, former White Sox infielder Eduardo Escobar went 2-for-4 with three RBIs in his first game with the Twins in Tuesday's 18-9 drubbing. Escobar started at shortstop and hit ninth.
Escobar was one of two players Minnesota acquired from Chicago on July 28 in exchange for Francisco Liriano.
"This is a little hard because I played all my career with the White Sox," Escobar said. "And I appreciate a lot the opportunity they gave me to play in the big leagues. But I appreciate being here, too. They've given me another opportunity here."
Outfielder Denard Span could rejoin the team as soon as he's eligible to come off the disabled list on Sept. 12, general manager Terry Ryan said. A sprained sternoclavicular joint -- which connects the clavicle to the sternum -- put Span on the disabled list on Aug. 30, retroactive to Aug. 28.
White Sox: Williams wants smart play
General manager Kenny Williams said the White Sox might not have played as smart as they could have while falling victim to a three-game sweep at the hands of Detroit over the weekend.
"One of the conversations we had on the bus and the plane was, 'OK, let's review what happened,'" he said. "'Did we play the smartest baseball? Did we take advantage of the other team's weaknesses and did we have the right game plan?'
"Well it wasn't a matter of talent that lost us those three games. We think we didn't step up in that category."
Dylan Axelrod, who pitched 2 2/3 innings of relief on Tuesday, and Hector Santiago both remain possible options to start for the White Sox against the Royals on Sunday. Santiago earned a win in his first Major League start on Monday while Axelrod got a victory last week while limiting Baltimore to one run over 7 1/3 innings.
Ben Revere enters Wednesday's game hitting .438 (7-for-16) lifetime against Jake Peavy.
Minnesota is still just 4-10 against the White Sox this season despite Tuesday's win. This is the first time the Twins have dropped at least 10 games to Chicago in one year since going 7-11 in 2005.