CHICAGO -- The Chicago White Sox reinstated third baseman Yoán Moncada from the 10-day injured list on Tuesday and optioned catcher Carlos Pérez to Triple-A Charlotte.
Moncada was placed on the IL on June 15 with lower back inflammation. He played eight games in a rehab stint at Charlotte, batting .333 (10-for-30).
"I feel good, not 100%, but I feel good enough to play," he said through a translator. "This is something I have to deal with. But definitely feel much better now than we started the season and much better than the first time I came back. This is probably the best I have felt since everything happened."
Moncada, 28, is hitting .232 with three homers and 13 RBI in 38 games with Chicago this year.
With the switch-hitting Moncada back in the lineup against the Cubs, Jake Burger moved from third to second base. It was the first major league start at the position for the 27-year-old Burger, who is second on the White Sox with a career-high 21 homers.
Burger said he has "put in a ton of work" with White Sox coach Eddie Rodriguez on getting more comfortable with second.
"It's a little different than third base. You have a little more time on ground balls," he said. "That's a positive. And obviously it's just working on the transfer over the last few weeks on double plays, and different arm slots for throws."
The White Sox also had first baseman Andrew Vaughn back in the starting lineup after he missed five games with a bone bruise in his left foot.
"Definitely getting better. Progress little by little," he said. "Did some stuff yesterday and I feel like it's good to go."
The White Sox also announced that they had outrighted veteran reliever Bryan Shaw to Charlotte. The 35-year-old Shaw was designated for assignment on Saturday.
The Associated Press contributed to this story.