The Mets have once dipped into their farm system to find a starter for Tuesday's game against the Phillies.
Right-hander Drew Gagnon, who has spent most of his season with Triple-A Las Vegas, will get the start as he makes his Major League debut on Tuesday. The 28-year-old owns a 4.67 ERA/5.10 FIP over 96.1 innings in 17 starts this season.
Manager Mickey Callaway said Gagnon's fastball is his go-to pitch.
"He's very aggressive with his fastball, he throws it in the zone," Callaway said before the Mets' doubleheader with the Phillies on Monday.
Speaking of the doubleheader, the Mets have also recalled RHP Jacob Rhame from Triple-A to be the 26th man. He has a 6.75 ERA in 13.1 innings with the Mets this season.
RHP Chris Flexen was sent back down after his start on Sunday. He was shelled by the Rays, giving up five runs on five hits over three innings.