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09/03/12 12:40 PM ET

Ross called up to join Oakland's bullpen

OAKLAND -- Right-hander Tyson Ross was back in the A's clubhouse on Sunday and confirmed that he'll be added to the active roster when eligible Monday and be available out of the bullpen.

Oakland made the roster move on Monday as expected.

Ross made a spot start for the A's in St. Petersburg on Aug. 24, and like his previous stints this season, he struggled. He was immediately sent back down to Triple-A Sacramento following the outing to begin work as a reliever, having posted a 6.45 ERA in 13 games as a starter.

"We really feel like, with this stuff, he can just try to rely on two pitches out of the bullpen and not pace himself but just go out there and go as hard as he can for however long as he's out there," manager Bob Melvin said. "I think you see the velocity pick up some, too. He's got the ability to get ground balls, and all those variables, we think, can make him a good reliever."

With Ross aboard, the A's have nine relievers in their bullpen.

Inge available as pinch-hitter until he has surgery

OAKLAND -- Though surgery looms in the near future for Brandon Inge, the A's third baseman isn't quite ready to pack up his bats for the winter.

Inge, who again dislocated his right shoulder in Saturday's 7-1 win over the Red Sox just hours after being activated from the disabled list, will be available off the bench until he goes under the knife next week, at which point his season will be done.

"It's a loss when he has the surgery," manager Bob Melvin said. "For now, he's still an option for us to pinch-hit off the bench. I know he's discussing timing and so forth with the surgery, but if and when that happens, he's an available piece off the bench and another option we have."

The 35-year-old Inge indeed has value as an extra bat, given his knack for collecting hits in key situations. He's hitting .333 with runners in scoring position, compared to .187 with the bases empty. Moreover, seven of his 12 home runs have come with runners on base, with two resulting in grand slams.

Josh Donaldson will take over at third base. The red-hot veteran, batting .344 with six doubles, four home runs and 14 RBIs since his Aug. 14 return, was unavailable Saturday because of a right hip flexor but was back in the starting lineup for Sunday's series finale vs. the Red Sox.

As good as Donaldson has been at the plate, he's also been prone to mental mistakes while on defense. Still, Melvin is confident in Donaldson's ability to handle the position down the stretch.

"I think we're just used to having some different guys here at times and know that the front office is doing their best job to get us the right personnel at the right time," Melvin said. "When Brandon first got here, he was as productive a guy as we've had. That dynamic will be missed. Josh Donaldson has done a terrific job since he's come back. He's picked up for him, and I think that's one of the strengths of our teams -- we lose somebody and somebody else picks up the production."

A's raise funds for breast cancer education, research

OAKLAND -- The A's on Sunday raised $53,600 while celebrating the 14th annual Breast Cancer Awareness Day, with proceeds benefiting several cancer foundations.

The American Cancer Society, Cancer Prevention Institute of California and Susan G. Komen for the Cure shared in the funds, and the event has now brought in more than $1.25 million for breast cancer education and research over 14 years.

A special pregame ceremony featured more than 500 Bay Area breast cancer survivors forming a symbolic human ribbon on the field. It marked a dedication to survival, while the release of white doves served as a symbol of hope.

Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.