"Hopefully it gets to the point we get him into a game," A's manager Bob Melvin said. "I'm not sure if it will be a start; we haven't figured that out yet."
Gray, out since Aug. 6 with a muscle strain and inflammation in his forearm, threw 30 pitches in his last bullpen session. He has struggled this season at 5-11 with a 5.74 ERA and he'd like to finish the season with some solid appearances before heading into the offseason.
• Right-hander Henderson Alvarez will undergo surgery on his right shoulder on Tuesday.
• Mark Canha, who underwent hip surgery in May, is expected to hit off a tee on Tuesday.
Rick Eymer is a contributor to MLB.com based in Oakland. He covered the A's on Monday.