GLENDALE, Ariz. — White Sox right-hander Jake Peavy was shut down with what doctors believe is rotator cuff tendinitis.
Peavy met with the team doctors Sunday, and they prescribed anti-inflammatory medication a day after he pitched 52/3 innings against the A's. He also battled flulike symptoms late last week.
"You know, what I'm experiencing has kind of been a culmination of start after start after start," Peavy said. "It's kind of been coming since that first time. It's been getting a little more uncomfortable as I keep going.
"We want to not let it mount into some bigger issue than it is. But at the same time, I'm thinking it's just part of getting back into the routine."
Peavy, 29, had surgery to repair a detached muscle in his throwing shoulder in July and had been setback-free. He said the current issue is not related to the surgery.
In other White Sox news, left-hander Matt Thornton was named the closer, replacing departed free agent Bobby Jenks. Thornton saved eight games in 2010, posting a 2.67 ERA in 61 appearances.
SIZEMORE RETURNS: All-Star centerfielder Grady Sizemore was back atop the Indians lineup for the first time since May, serving as the DH against the Diamondbacks. Sizemore, who had microfracture surgery on his left knee June 4, went 0-for-2.
In other Indians news, shortstop Asdrubal Cabrera left the game in the first inning with an apparent right leg injury.
JAPAN AID: Braves right-hander Kenshin Kawakami will donate $50,000 to assist relief efforts in his native Japan, which has been devastated by an earthquake, tsunami and an ongoing nuclear crisis. The donation will be made along with one from the Braves through the Japan-America Society of Georgia.
ANGELS: First baseman Kendrys Morales, who has been battling a left big toe injury in his recovery from left ankle surgery, will start the season on the 15-day disabled list, manager Mike Scioscia confirmed.
ASTROS: Left-hander Wandy Rodriguez, who missed his last start with shoulder tendinitis, threw lightly and is scheduled to make his next start Tuesday.
BRAVES: The team will be cautious with right-hander Tommy Hanson's back discomfort, having him skip a start today and instead pitch six innings in a minor-league game Wednesday.
METS: Rightfielder Carlos Beltran ran sprints and took batting practice two days after getting a cortisone shot in his sore left knee. Beltran remains questionable for opening day.
NATIONALS: All-Star third baseman Ryan Zimmerman tested his sore left groin by hitting soft-toss pitches and said he felt no problems with the injury that has sidelined him since Monday. It's still unknown when he'll return to game action.
ORIOLES: First baseman Derrek Lee had an MRI exam on his left foot a day after fouling a pitch off the foot in his spring debut.
PADRES: The team claimed right-handed reliever Pat Neshek off waivers from the Twins.