NEW YORK — RHP Joba Chamberlain has a strained oblique on his right side and will be put on the disabled list retroactive to Sunday, becoming the 10th Yankee on the DL.
Others are SS Derek Jeter (broken ankle), 3B Alex Rodriguez (hip surgery), 1B Mark Teixeira (torn tendon sheath in wrist), OF Curtis Granderson (broken forearm), INF Kevin Youkilis (sprained back), C Francisco Cervelli (broken hand) and pitchers Ivan Nova (triceps tightness), Michael Pineda (shoulder surgery) and Cesar Cabral (broken elbow).
RHP David Robertson had a scan on a knee that has pain where the hamstring attaches. He is day to day.
Rodriguez has been cleared to start workouts Monday at the minor-league complex in Tampa. "Really excited to be getting closer to being back on the field," he wrote on Facebook.
Teixeira also will report next week to the complex, where Granderson is hitting in extended spring training.
"We're getting ready to fit the extended spring program with some championship caliber rings," GM Brian Cashman said.
Helping victims: Major League Baseball and the players association are donating a combined $100,000 to victims of a West, Texas fertilizer plant explosion that killed at least 14 people and injured about 200. The league will encourage fans to donate during games on national television.
Buchholz flap: Red Sox manager John Farrell denied accusations that RHP Clay Buchholz put a foreign substance on the ball during Wednesday's win over the Blue Jays. Toronto analyst Dirk Hayhurst said Thursday that Buchholz was "absolutely" cheating. A photo on the Sportsnet website showed Buchholz wiping his first two fingers across his forearm, which appeared to have a white substance. Buchholz said he puts rosin on his arm and occasionally wets his fingers to get a better grip.
Harper returns: Nationals LF Bryce Harper played against the Braves after X-rays on his left shoulder were negative. Harper winced on a check swing Wednesday and soon left. He has a bruise under his left shoulder blade and is taking medication for swelling. He went 0-for-4 with a walk.
Rangers' record cold: The Rangers had the coldest day game at their home ballpark three weeks ago, 39 degrees. Now they've had their coldest May game, a game-time temperature of 44. The overall record in Arlington was 38 degrees, on April 7, 2007.
Blue jays: RHP Josh Johnson went on the 15-day DL, retroactive to Monday, because of right triceps inflammation. RHP Brad Lincoln was recalled from Triple-A Buffalo.
Braves: LF Justin Upton was chosen NL player of the month for April.
Marlins: Juan Pierre became the ninth-fastest player to reach 600 steals, doing it in 1,907 games. He is the 14th to reach the milestone, with Otis Nixon next at 620. "I'm just grateful. Those guys are way better than me, but it's kind of cool to be on that list," Pierre said.