Frazier (hamstring) went 1-for-3 with double and a walk for Triple-A Indianapolis on Monday.
Although Frazier isn't expected back until the weekend, it wouldn't be surprising to see the team advance his timeframe. Pittsburgh recalled utilitymen Max Moroff and Chris Bostick on Monday and they went a combined 0-for-5 with five strikeouts. Frazier, who is batting .306 in 49 at-bats, hasn't played for the Pirates since April 22.