The reliever last pitched Aug. 17 against Cleveland, then landed on the DL two days later. He has been limited to throwing socks thus far in his recovery, though Melvin expects that to change soon.
"I know he's champing at the bit," Melvin said.
A potential return for Eric Sogard is not even on Melvin's radar, although the utility infielder is participating in baseball activities. The A's placed Sogard on the DL with a strained back on Aug. 10.
"He's doing some baseball activity, but I don't think you're looking at a potential option in the coming days," Melvin said. "We'll see where he's at when we get home, but it's not something we're looking at now, certainly on this road trip."