The New York Mets bullpen was one of the more underrated strengths of the team. I can make a very compelling argument that it was in fact the team's biggest strength.
The rotation for pretty much the entire season was a mess. Jacob deGrom was Jacob deGrom, but he only pitched for half the year. Taijuan Walker was an all-star in the first half, and ended up being unusable by the end of the season. Carlos Carrasco was injured for most of the year and wasn't the guy the Mets thought they were getting when he returned. Marcus Stroman was the only arm the Mets could rely on to give the bullpen some sort of rest.
The inconsistencies in the rotation meant the bullpen on most nights was tasked with getting more than 12 outs. This meant guys were used pretty constantly and while most of the relievers pitched well, it's hard to rely on guys like Miguel Castro in huge spots day in and day out because the bullpen is so burnt out.
While there are some good pieces, the Mets bullpen needs some work.
The Mets have had an unbelievable offseason thus far. They signed Max Scherzer to help the rotation that desperately needed help. They signed Starling Marte, Mark Canha, and Eduardo Escobar to help a lineup that was towards the bottom in all of baseball in runs scored. What they have not addressed is the bullpen.
There are a lot of good pieces in the Mets bullpen. As much as Mets fans love to hate on Edwin Diaz he really is one of the game's better closers. Trevor May and Seth Lugo are really solid right-handed late game relievers who more often than not get the job done. Miguel Castro and Drew Smith are great middle relief options who can go multiple innings.
The Mets best reliever was Aaron Loup who posted an ERA under 1.00. Unfortunately, he signed with the Angels. With the Mets losing their best reliever and lacking depth, the bullpen should be a big focal point whenever the lockout ends. Fortunately, there're some quality options available in free agency.