The Mets Had the Third-Best Bullpen in Baseball. Nobody in Baseball Had Fewer Leads to Protect.

The question: how can the third-best bullpen in baseball be the right thing to sell?

The answer. A 3.1 ERA out of the pen, third of all thirty clubs. Thirty-two save opportunities, last of all thirty clubs. The Mets had a superb bullpen and almost nothing for it to protect.

Why that is surprising. We rank bullpens by ERA as though the number stands alone. It does not; a reliever’s value depends entirely on how often his team hands him a lead, and we never check.

You are looking at a 50–66 team. They are 20 games out of first and eleven and a half out of a wild card, and at Monday’s deadline they sold.

Three of them were relievers: Luke Weaver, a 1.8 ERA and a 0.82 WHIP; Brooks Raley, a 2.0; Huascar Brazobán, a 2.6. Watch the three of them: together they threw 138 innings at a 2.2 ERA. That is not the bullpen of a last-place team. That is the back end of a contender.

And do not write it off as a fluke of three names. Counting only pitchers who never started a game, the Mets bullpen posted a 3.1 ERA — third-best in baseball.

So here is the question. How does a team with the third-best bullpen in baseball lose 66 games by the first week of August?

What a Save Opportunity Actually Counts

A relief pitcher turns skill into wins only under one condition: somebody has to hand him a lead worth protecting. Watch how rarely that happened.

Baseball already counts that condition for you. A save opportunity is roughly a late-inning appearance with the game close enough to lose.

The Mets had 32 of them through deadline day. That is the fewest in Major League Baseball. Washington, at the other end, had 60.

Look at the clubs the Mets share the bullpen leaderboard with. San Diego got 49 chances; the Yankees got more still. You can see the shape of the problem before we even plot it.

The Mets were handed 32.

The Outlier

Plot every team by how good its relievers were and how often they got to prove it, and the Mets do not sit in the cloud with anyone. They sit alone.

So They Sold It

Which makes the deadline read very differently from “the Mets gave up.” They were sitting on an asset that was worth far more to somebody else than it was to them, and you would have sold it too.

Raley went to Philadelphia, a division rival holding a wild card spot — a club that will hand him the late innings of games that matter, which is the one thing New York could not do. That is not a mistake. That is the entire point. He is worth more there.

One more thing, because it is going to come up. In the three games since the sale the Mets have won all three, scoring six, six, and thirteen runs on Cleveland. Somebody will read that as proof the bullpen never mattered. It is proof of nothing — three games is noise, not signali, and three games is precisely the sample size that fools people. What it does gently confirm is that relief pitching was never the broken thing here. A team that puts up six, six, and thirteen does not need saving. It needed those innings back in April, when it was losing games one run at a time.

What To Take Home

So give up the instinct that a 1.8 ERA is a 1.8 ERA wherever it happens. It is a fine number attached to a question we never asked: how often did it matter?

This is why the unit of analysisi matters more than the rate does. “Third-best bullpen” is measured per inning pitched. “Wins” is measured per game that was still in doubt. Those are different denominators, and the Mets sat at opposite ends of the two.

Carry the habit past baseball. Any time you meet an impressive rate — a conversion percentage, a win rate, a response rate — ask how many chances it got, and what those chances were worth.

The Mets had one of the best bullpens in baseball. It is the most expensive way there is to learn that being good is not the same as being useful.