GOODYEAR, Ariz. -- 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.

For now, the A's may be looking at switch-hitting Jed Lowrie at shortstop and a platoon of the left-handed Eric Sogard and right-handed Scott Sizemore at second base.

  • Travis Blackley says he's as befuddled as he's ever been throwing a baseball. He says all four of his pitches -- fastball, changeup, two-seamer and slider -- are working, but he's still getting lit up.

    It happened again Tuesday when Blackley, asked to hold a two-run lead in the ninth, blew the save. He got another two-run lead in the 10th, and gave one back before shutting down the Indians. His spring ERA is 14.21.

    "Neither (inning) was pitched very well," Melvin said. "He will tell you that."

    Actually, he won't.

    "I'm making all my pitches," Blackley said. "I can't wrap my head around this. Imagine my surprise giving up those runs. It's very frustrating. I talk to (pitching coach) Curt Young and there's nothing he can tell me, because the location (of the pitches) is good. I don't know what is going on, but I won't give up."

    Six weeks ago Blackley was considered a shoo-in to make the roster, but he's no better than 50-50 now, and that estimate may be on the high side.

  • Brett Anderson made his final start before his opening day turn against the Seattle Mariners in Oakland on April 1. He allowed three runs (two earned) against the Indians in 51/3 innings and finished the spring with a 6.75 ERA.

    "The breaking ball was non-existent," Anderson said. "But I had a good fastball and a good change, and when we get up in the Bay Area with the humidity, maybe the curve will break."

  • Three games into the Nate Freiman experiment, the first baseman still is a candidate to make the roster. He came in defensively Tuesday and afterward Melvin said "we like what we see so far." Freiman could be the beneficiary of the roster movement at second base, as now it seems there is enough room for the A's to carry him as a backup to Brandon Moss.

  • LHP Jordan Norberto has been a longshot to make the roster, but his chances are improving. He had a shutout inning Tuesday while Blackley was giving up three runs. "With Norberto, it's all about him staying healthy," Melvin said.