Martinez (foot) started in right field and went 2-for-2 with a pair of doubles and an RBI in a rehab game for Triple-A Columbus on Sunday.
Martinez made the second appearance of his rehab appearance and played six innings in the outfield. The Guardians plan to gradually ramp Martinez up to playing a full nine-inning game during his rehab assignment, and he may also need to play on consecutive days before he's deemed ready to return from the 10-day injured list. Martinez has been on the shelf since June 16 due to a non-displaced fracture in his left foot.