Edwin Díaz , the best reliever on the free-agent market, is a two-pitch pitcher. Fastball, slider, that's it.

And there's nothing out of the ordinary there. Elite closers relying on two pitches is par for the course. But what's interesting for Díaz entering 2026 is how his balance of his two pitches has changed.

Díaz is the best reliever on the free-agent market because he now has two equally deadly weapons.

For a lot of those closers, one of their two pitches does the heavy listing. Take Devin Williams, for example, who just signed with the Mets. Essentially every pitch Williams throws is a fastball or changeup. But his "airbender" changeup has been by far his most dominant pitch over the course of his career.

That was Díaz for a while, too.

When he turned things around with the Met

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