Jenrry Mejia, who was initially set to start on Sept. 19 against the Phillies, will pitch on Saturday against Milwaukee in place of Jeremy Hefner. Hefner will finish the season in the bullpen.
Collins said he plans to give Mejia at least two more starts before the season comes to a close early next month. Collin McHugh, whose scheduled start on Sept. 18 will be made by Matt Harvey, will be slotted in somewhere else and will start at least one more time.
Mejia hasn't started a Major League game since Sept. 15, 2010, -- he missed the entire 2011 season and underwent Tommy John surgery last May. He made his first appearance with the Mets this season on Friday, allowing one run over two innings.
Collins said Hefner's workload was the motivation for the move -- the right-hander, who has been used as both a starter and reliever, has tossed 78 1/3 innings in his first big league season.