Menez was officially recalled from Triple-A Sacramento ahead of Tuesday's start against the Nationals.
Menez is set to join San Francisco's starting rotation after posting a 4.06 ERA and 1.50 WHIP with a 66:22 K:BB over 44.1 innings this season at Triple-A. Sam Selman was optioned and Joe Panik was designated for assignment in a series of roster moves.