With Todd Frazier set to come off the Injured List, Amed Rosario feeling ill, and Justin Wilson needing to head to the Injured List with elbow soreness, the Mets set for a series of transactions to address the bench and the bullpen. In the end, Luis Guillorme was back with the team, and for some reason Jacob Rhame stayed in the bullpen while Paul Sewald was sent back to Syracuse.

Having seen both pitchers since 2017, you see two very flawed relievers. There is a reason why both have not been able to quite stick at the Major League level. To some, choosing one over the other is not that big of a deal because most fans don’t trust either reliever. That mindset is a bit short-sighted.

For starters, take a look at their career stats. In his career, Sewald has pitched 126.2 innings in 106 appearances. He has a 0-13 record with two saves, a 5.19 ERA, 1.342 WHIP, 3.3 BB/9, and a 9.1 K/9. From an advanced statistic perspective, Sewald has a 76 ERA+ and a 4.09 FIP.

For his part, Rhame has pitched 42.2 innings over 40 apperances. He is 2-3 with one save, a 1.594 WHIP, 3.6 BB/9, and a 7.4 WHIP. From an advanced statistic perspective, Rhame has a 59 ERA+ and a 5.83 FIP.

Certainly, when you look at the stats, Sewald has definitively had more success than Rhame. However to be fair, Sewald has had more chances despite Rhame arguably having much better stuff. Of course, while Rhame’s stuff may be better, it has not yet translated to Major League success.

Ideally, you want to carry the best pitchers on your staff as you possibly can, and so far in their respective careers, Sewald is the better pitcher. However, it is much more than that. There is also an element on how the pieces in the bullpen fit together.

An interesting note with Sewald is he has been fairly consistently used for multiple innings in his career. For example, in two of his three appearances this year, he pitched over one inning. Last year, 18 of his first 32 appearances were more than one inning. Overall, Sewald has pitched more than one inning 32 times in his career, which is 30 percent of his appearances.

With respect to Rhame, this is something he has done as well. In fact, he has done it in 12 of his 40 appearances, which is the same 30 percent rate. However, there is a difference in the amount of innings Rhame and Sewald have gone. For example, Sewald has been able to pitch more than two innings when needed. That’s a feat Rhame has not yet been asked to do.

Looking at the construct of the Mets bullpen, Seth Lugo and Robert Gsellman can both go multiple innings. This creates an issue for the Mets when their starters can’t go deep into games because they’re now using these two relievers in low leverage situations making them unavailable or not as effective when they’re needed for the higher leverage spots.

Right there is the reason why the Mets should have kept Sewald on the roster. He is the guy Mickey Callaway needs to bring into the game when his starters falter and the Mets fall behind by a good margin. Sewald can come in and give multiple innings thereby saving the bullpen and letting them fight another day. At this stage in his career, Rhame doesn’t have that same capability.

In the end, that’s why seemingly small decisions like this have larger ramifications. In the end, you really have to wonder how much this was factored into the Mets decision making when they opted to carry the pitcher who not only gives them much less length, but also has not had nearly the same level of success of the Major League level.