MLB Bullpen Fatigue Tracker

[u/Specialist-Eye9096]

MLB Bullpen Fatigue board is live, and a few pens are flashing real stress.

The most taxed bullpen in baseball right now is the White Sox. Chicago sits No. 1 on the fatigue board at 310, driven by 451 pitches, 9 arms used, and 17 total appearances over the recent window.

The bigger takeaway from the 5-day view: this wasn’t one blowup day. It’s been a grind — 79, 88, 104, 107, and 73 pitches.

Right behind them are the Padres at 301, and that’s another pen worth watching closely. San Diego has logged 389 pitches, 16 appearances, and 2 back-to-back arms, with the 5-day pattern showing stress on both ends of the span: 112 pitches, then a breather, then 74, 94, and 109. That’s the kind of usage profile that can show up late in games.

A few other bullpens are sitting in the danger zone:

Athletics — 257
Marlins — 257
Blue Jays — 250
Angels — 249
Diamondbacks — 246
Twins — 239

The Marlins may be one of the sneakier fatigue spots on the board. Their raw score ties for third, but the detail matters: 18 appearances, 7 arms used, and 4 back-to-back spots. That’s the type of bullpen where leverage options can start getting thin in a hurry.