5. Mets pitcher Sean Reid-Foley
Sean Reid-Foley was a name I was very intrigued with heading into the spring. As of now, the locks in the bullpen include Edwin Diaz, Trevor May, Miguel Castro, Seth Lugo, Adam Ottavino, and Drew Smith. I believe Trevor Williams is as close to a lock as you can be, so he's the seventh reliever.
With the 26 man roster, teams usually have eight relievers. So that'd mean guys like Shreve, Reid-Foley, Claudio, and Megill would be fighting for one spot. Now, they're fighting for three.
Once the rosters go back down to 26, I'd be surprised if Reid-Foley is on the team. However, since the roster is going to be at 28, I believe he will make the team. Reid-Foley is out of options and showed enough last season in my eyes to give him a shot.
Reid-Foley was a guy the Mets could turn to when they needed innings. He'd be the guy to pitch early in games when a starter got roughed up, or would pitch late in games when a game is out of reach in either direction. While he isn't the best pitcher in the game, having someone who can just give you innings when you need them is a lot more valuable than people realize.
In Reid-Foley's first seven appearances of the season, he allowed just four runs in 15.2 innings pitched. Averaging over two innings and less than one run per appearance over a seven-appearance span is quite good.
His season as a whole was really derailed by injury and two bad appearances. In ten of his 12 appearances he allowed one run or fewer, most of the time recording more than four outs.
If Reid-Foley struggles or the Mets just don't end up having a spot for him when the rosters go down to 26 players, I can see them designating him for assignment. But since they'd likely lose him if he doesn't make the team out of the gate, I think it'd be silly to risk that when he's shown he can be a reliable piece, especially when they'll need innings when guys aren't fully stretched out.