Gervase was optioned to Triple-A Oklahoma City on Monday.
Gervase has been booted from the MLB roster to make room for the return of Evan Phillips from the 60-day injured list. Gervase will serve as bullpen depth at Triple-A, where he's posted a 3.60 ERA and 1.44 WHIP with 35 strikeouts across 25.0 innings so far this season.