The 25-year-old has been largely unsuccessful in three appearances with the Mets this season, including two starts. He couldn't last past the fourth inning in either of his starts en route to amassing an 0-1 record with a 12.46 ERA in 8 2/3 innings this season.
Schwinden being placed on waivers opens up a 40-man roster spot for right-handed reliever Elvin Ramirez, a 24-year-old who is 3-0 with a 0.00 ERA and one save spanning 11 appearances in Triple-A Buffalo.
The Mets still need to make another roster maneuver to clear the way for catcher Josh Thole's return from the disabled list. According to ESPN New York, Mike Nickeas is in the most danger.