BULLPEN
Edwin Diaz, CLS
Trevor May, RHP
Aaron Loup, LHP
Miguel Castro, RHP
Jeurys Familia, RHP
Jacob Barnes, RHP
Dellin Betances, RHP
Stephen Tarpley, LHP
The top five relievers listed above are locks, and Jacob Barnes (who is out of options) has looked tremendous lately, likely cementing his spot.
That leaves two spots left (assuming the Mets carry eight relievers and five bench players, which is likely). One of those spots would've probably gone to Drew Smith, but he's dealing with a shoulder issue. And while Smith might be ready to return soon, he is not going to be ready in time for Opening Day.
Dellin Betances' spot isn't guaranteed. But despite his not showing enough life on his pitches to be relied on (which is alarming and makes his spot in the bullpen long-term possibly untenable), it will still be a surprise if he is left off the roster.
On Wednesday, Rojas talked about Betances, suggesting that he would make the team but noting that the Mets were keeping all options open. Translation? Betances will make it, but his leash will be short.
And if Betances is on the team, that leaves one spot, with Robert Gsellman, Stephen Tarpley, and Jerry Blevins among those fighting for it.
BENCH
Luis Guillorme, 3B/SS/2B
Kevin Pillar, OF
Albert Almora Jr., OF
Tomas Nido, C
Jonathan Villar, INF/OF
The Mets don't have anything to decide here.
Their depth has been apparent since Day 1 of spring training, and the five players above have been locks to make the team ever since Jose Martinez suffered his long-term injury early in camp.