The A’s just announced that Brett Anderson has a stress fracture in his right foot and will be re-evaluated again in four weeks, which means he will be out closer to two months, or maybe more, because obviously he will have to go through rehab and build his innings back up. Anderson told me the other day he’s frustrated he’s been unable to pitch, especially with his arm feeling so great – this is going to be a real blow to him. Anderson has spent the better part of the past three seasons on the DL.

Dan Straily is pitching in Anderson’s spot in the rotation, but I’d imagine if he continues to struggle with consistency (he has a 7.27 ERA and every time he has a good outing, he follows it with a poor one) that we might get a look at 2011 first-round pick Sonny Gray, who is pitching extremely well at Sacramento.

Oakland also added reliever Hideki Okajima from Triple-A Sacramento this afternoon and designed struggling right-hander Chris Resop for assignment. Okajima, the former Red Sox lefty, has a 2.16 ERA this season, and 18 strikeouts and two walks in 16 2/3 innings. Resop has allowed 22 hits and 10 walks in 18 innings; opponents were batting .293 against him.