SCOTTSDALE, Ariz. -- A's closer Andrew Bailey confirmed the obvious Sunday, that he'll start the season on the 15-day disabled list because of a forearm strain.

More unexpected was manager Bob Geren mentioning Grant Balfour as a fill-in closer option along with Brian Fuentes.

Fuentes, owner of 187 career saves, was the assumed heir apparent after Bailey hurt his forearm March 14, though Geren had not officially christened Fuentes the closer.

"I could use either one," Geren said. "Fuentes has the most experience. I feel comfortable with him. I also know Grant can do it if it's better to use someone else in a different inning."

Fuentes, 1-1 with a 5.87 ERA in nine spring appearances, didn't allow a run through his first six appearances but was touched for six hits and five earned runs over his next two (11/3 IP). The lefty retired both hitters he faced Friday against the Los Angeles Angels.

Geren is confident that Balfour, 1-0 with a 7.71 ERA in 10 games, has worked out some mechanical issues.

The right-hander has just eight saves in 261 major league appearances, but he's averaged 10.29 strikeouts per nine innings over the last three seasons.

Bailey played catch Sunday morning, the first time he's thrown since his injury.

"It's safe to say I'll miss a little time," Bailey said. "But better now than a month or two or three down the road."


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Once Bailey starts throwing off the mound, he'll likely require a minor league rehab stint. With no setbacks, his return figures to come in mid-to-late April.

  • Reliever Joey Devine, slow to round into form after missing two seasons because of elbow surgery, was optioned to Triple-A Sacramento.

    That means Tyson Ross or lefty Bobby Cramer will claim a bullpen spot, at least until Bailey returns. Give Ross the edge, as Geren is unlikely to want four lefties among his seven relievers.

  • The A's dropped their Cactus League finale 5-2 to the Colorado Rockies, leaving them with a 12-18-1 mark. The .387 winning percentage is their lowest in Arizona since a .375 mark in 1990, when they went 6-10. They finish the preseason with the three-game Bay Bridge Series against the Giants, starting Monday night at AT&T Park.

    A key hitter who enjoyed the best camp: Third baseman Kevin Kouzmanoff, who hit .426 in 19 games with two homers and 12 RBIs.

    A key hitter who endured the worst spring: New designated hitter Hideki Matsui, who batted .125 (7 for 56) and notched just one extra-base hit -- a homer on March 13.