Three injured Athletics pitchers are all doing rehab work on Monday.
Eric O'Flaherty, on the 15-day disabled list with a shoulder injury, will throw a bullpen, as will A.J. Griffin, on the DL with an elbow injury.
O'Flaherty could begin a minor league rehab assignment soon, per the San Francisco Chronicle.
Drew Pomeranz, on the 15-day DL with a shoulder injury, will play catch on Monday.