The Athletics activated Muncy (hand) from the 10-day injured list Monday.
Muncy has been out of commission since late April due to a fractured left hand. He went 10-for-27 with three home runs and two doubles in seven minor-league rehab games, which was enough to convince the Athletics he was ready to rejoin the active roster. Muncy played some shortstop on his rehab assignment, and with Zack Gelof faring well at third base, Muncy could see some action at both spots on the left side of the infield, at least until Jacob Wilson (shoulder) returns from the IL.