4. Gregory Soto
As you'll see, this list is flooded with deadline acquisitions who were heralded as David Stearns' heists just a few months ago. Gregory Soto is no different. It seemed like the Mets had totally bolstered their bullpen, a point of concern given the many injuries that overwhelmed the group.
As was the story of the entire season, what appeared to be surefire was nothing more than a misfire. There was a Soto who held up his end of the contractual bargain for New York in the second half, but it was not Gregory. In 24 games, he had zero holds, zero saves, 12.1 hits-per-9, and a WHIP of 1.609. When the Mets needed their bullpen most, they didn't yield the results they needed. Soto was supposed to help lead that charge. But, plain and simple, he did not. His contract expires, and the Mets will shake his hand and wish him the best of luck in all future endeavors.
5. Ryan Helsley
The trend of the Mets bringing in seemingly potent pieces at the deadline, only to find us bemoaning their tenures here in late September, is a gut-wrenching one for a fan. Every single swing David Stearns took feels like strike three today. Again, it seemed foolproof. The Mets were adding a multiple-time All-Star to a bullpen filled with them. And this guy, named "Hell-sley", comes out to Hell's Bells by AC/DC – pretty cool, pretty clever, right?
The positive vibes collapsed almost on impact. His time with the Mets can only be categorized as a sheer disaster. He appeared in 21 games and completed 19 innings. His ERA finished at 7.58 somehow. His WHIP finished as high as 1.789. He allowed 11.4 hits per 9 and almost two home runs per 9. It could not have gone worse.
He joins the several Mets who have cost them young prospects, whose contract ends this offseason. And like the rest of them, presumably, he'll try not to let the door hit him on the way out. And we'll all try to forget this nightmare season ever happened.