CHICAGO -- The Kansas City Royals tweaked their starting rotation.

Instead of starting right-hander Chris Young (2-6, 6.37 ERA) on Saturday against the Chicago White Sox as scheduled, the Royals will go with left-hander Danny Duffy (1-1, 3.35) to put him back on a more regular schedule after Thursday's off day. Young will instead start Tuesday against Cleveland.

"We want to keep everybody on five days," Royals manager Ned Yost said. "We didn't want to bump (Duffy) back to six, especially right now. You're always sharper on four, healthier on a five, kind of get out of whack on a six (day rest). Sometimes you need it, but right now I rather keep our guys sharp and keep everybody else on a regular rotation."

Duffy last pitched Monday, allowing two runs in 6 1/3 innings against the Baltimore Orioles. He was scheduled to pitch Sunday, but right-hander Yordano Ventura will instead start that day on regular rest. Ventura is appealing his nine-game suspension for his part in a brawl Tuesday with the Orioles.

"It is what it is. We'll just move forward," Yost said.

Left-hander Jose Quintana (5-6, 2.58) will start for the White Sox on Saturday. He has lost five consecutive starts and allowed a season-worst five runs in 4 2-3 innings against the Detroit Tigers in his last start. After he went 3-1 with a 1.47 ERA in April and 2-4 with a 2.61 ERA in May, Quintana is 0-1 with a 9.64 ERA in June.

"I have a lot of confidence in all my pitches at this moment, but I missed a spot a couple of times," Quintana told the Chicago Tribune after his last game.

The White Sox (31-30) have made a flurry of moves to try to revive their season. They designated veteran shortstop Jimmy Rollins for assignment and promoted top prospect and shortstop Tim Anderson from Triple-A Charlotte on Friday. A day earlier, the White Sox designated right-hander Mat Latos for assignment and signed veteran first baseman Justin Morneau to a one-year deal. The White Sox beat the Royals 7-5 Friday to win two out of their last seven.

"In the last 24 hours, we've done a pretty fair amount to keep this roster moving and we're trying to put ourselves in the best position to win," White Sox general manager Rick Hahn said. "The consensus was that Timmy was ready to contribute at the big-league level.

"From our standpoint, hopefully it's very clear to everyone: He is not here to be sort of a savior. He is here to, hopefully, continue his successful run that he has been on over the last month or six weeks down there at Charlotte and get himself some experience here at the big-league level. We do feel that he has the ability to be a special player."

Anderson said he received a text message from Rollins wishing him well. The 22-year-old admitted he was excited but trying to keep his cool.

"(I'll) just go out and do my normal thing I've been doing, especially what it took me to get here," he said.