OAKLAND -- With the return of regular second baseman Mark Ellis on Saturday, Adam Rosales has been freed up to become the utility player the A's sought when they traded for him this offseason.

Coupled with the addition of Coco Crisp, who made his Oakland debut on Friday, Ellis' return has given A's manager Bob Geren the lineup he expected to see this season.

"It's kind of the team in Spring Traning you envisioned," Geren said. "Looks like almost everyone is back in there at this point, and it's a good feeling to have.

Crisp remained as Oakland's starting center fielder, hitting leadoff, while Ellis occupied the No. 6 slot Saturday.

Rosales spelled Kevin Kouzmanoff, who has played in every game but one this season, as the A's starting third baseman.

Geren said Rosales will likely be filling in for shortstop Cliff Pennington and first baseman Daric Barton on occasion throughout the season.

"That's what we really need to stay healthy -- is have flexibility and the utility of a guy like Rosales," Geren said.

Geren also said Jack Cust will become the team's primary designated hitter now that Eric Chavez has been placed on the 15-day disabled list.

Duchscherer to begin rehab on left hip

OAKLAND -- A's right-hander Justin Duchscherer said he will go to Arizona on Sunday to start rehabbing his injured left hip.

Duchscherer has been placed on the 15-day disabled list twice because of his inflamed left hip this season, the most recent time coming on May 16.

Duchscherer said he had a lubricant injected into his left hip joint earlier this week and that he doesn't know how it will respond. Duchscherer played catch on flat ground before Saturday's game against the Giants, exiting the field after a few minutes.

"We're making an attempt to avoid surgery," Duchscherer said. "We'll do this stuff and see how it goes."

Duchscherer said he will throw a couple of bullpen sessions in Arizona and try to make a couple of rehab starts before trying to come back to the big league club. He said he has no timetable for a return.

Duchscherer has a femoroacetabular impingement, which is caused when the ball and socket of the hip rub together abnormally, injuring the joint. If Duchscherer needs surgery, his season will likely be over.

Worth noting

If all goes well, A's lefty Brett Anderson could be back on a big league mound on May 29, when the A's play at Detroit. As expected, manager Bob Geren said Anderson will be limited to 50-60 pitches during his rehab start with Triple-A Sacramento on Monday. Geren said Anderson will be limited to about 75-80 pitches if he makes the May 29 start. If Anderson is unavailable, Geren said the team will likely turn to Tyson Ross or Vin Mazzaro. ... For the first time all season Saturday, the A's sold out the Oakland Coliseum with 35,067 fans. ... The A's are 8-2 in one-run games, which is the best mark in the Majors. ... Andrew Bailey has not allowed a run in his last 17 appearances (17 innings pitched) in Oakland.