Montero took a no-decision on Monday, shutting out the Marlins for five innings despite allowing six walks. He gave up two hits and struck out three.
The six walks are obviously a bad sign, but the fact that he was able to keep the Marlins off the board despite the walks was promising. The 25-year-old struggled so mightily in Triple-A that he was demoted to Double-A before being recalled to make the spot-start on Monday. After a posting a 1.70 ERA for Double-A Binghamton, Montero will likely get some time in the Mets' bullpen this September when rosters expand.