Ike Davis has hit the disabled list with a strained quad. I haven't seen anything yet on how long to expect him to be out. On the roster page I've figured basically the 15-day minimum. That's probably hopeful, but at this point in the season, with the team having the worst record in all of baseball (if only this were exaggeration), hope is all we have.
It is worth noting, by the way, that the peculiar distribution of runs the A's have had marks them as one of the unluckiest (in a sense) teams in memory: they are underperforming their Pythagenpat record by nearly six games and their higher-order Baseball Prospectus advanced records by nearly eight games.