The A's infield situation became a bit less jumbled Tuesday when Adam Rosales was placed on the disabled list with strained ribs and shortstop Hiroyuki Nakajima strained his left hamstring.

Nakajima was hurt while running the bases during the 10th and final inning of the A's 7-6 win over Cleveland. After the game, Nakajima said through an interpreter that he hopes the injury is just a cramp, and that he's hoping to play Wednesday against Colorado in the A's Cactus League final before they break camp and head back to Oakland. Earlier in the day, he broke an 0-for-22 streak with a line drive single off the first baseman's glove.

Manager Bob Melvin wasn't quite as optimistic as Nakajima.

"It's a left hamstring strain," Melvin said. "It's too bad, because he'd finally gotten a hit. It's probably not serious, but you don't know with hamstrings. They can be a difficult injury."

Rosales will be sidelined until at least April 10. He suffered a strained left intercostal (rib) injury while making a throw on Monday. He is hitting .324 this spring, and can play second, third and short.

"It's too bad, because the guy was finally healthy again," Melvin said of Rosales. "This is a tough one to lose."

The A's have depth on the infield, though it could be sorely tested if anything further happens. Of course, they could bring back Jemile Weeks, who was sent to Triple-A Sacramento on Sunday.