Righty Tyson Ross, who last pitched for Triple-A Sacramento on Thursday, is scheduled to make his next start on Tuesday -- the same day the A's just so happen to need a fifth starter in Anaheim.
A's manager Bob Melvin wouldn't officially announce Friday who that will be, but he tipped his hand by saying that scheduling will likely dictate his decision.
The choice would be a natural one, as Ross barely missed the cut on the Opening Day roster, when the A's opted for Graham Godfrey's services in the rotation instead. In two starts with the River Cats, Ross is 0-1 with a 4.00 ERA, having surrendered four runs with three walks and four strikeouts in nine innings.
Oakland's other top candidates, right-handers Jarrod Parker and Brad Peacock, are likely primed for more seasoning before earning a promotion this year.