Stock allowed one hit and retired the other batter he faced while working out of the bullpen in Friday's 10-6 win over the Giants.
Following his promotion from Triple-A Syracuse on Aug. 2, Stock started in his first six appearances and submitted a 5.88 ERA and 1.73 WHIP across 26 innings. The Mets' decision to make him available out of the bullpen Friday suggests that he's been dropped from the rotation in favor of Jonah Tong, who will be called up from Triple-A to start Monday in Miami.