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The Lens · Pitching Report

The Yankees Own the Rotation, Boston Owns the Pen

SEPTEMBER 15, 2026

The best staffs and arms in the game right now, by team ERA and our form score.

Pitching is the theme today, and two New York arms sit atop it. The Yankees have the best starting rotation in baseball, while Boston edges them for the deepest bullpen. Up front, Jacob Misiorowski and Cam Schlittler are throwing like the season belongs to them.

Best rotation

Starting rotation ERA — starters only. Lower is better.

The Yankees lead the rotation board at a 3.28 starter ERA, with the Dodgers (3.48) and Detroit (3.51) close behind. It's quiet, steady company for the Tigers, a team still under .500 at 71-79 but pitching like a contender.

Best bullpens

Bullpen ERA — relievers only. Lower is better.

Boston tops the bullpen at a 3.11 reliever ERA, a nose ahead of the Yankees at 3.13. Atlanta, San Diego and Milwaukee round out the five, meaning the deepest pens and the best rotations mostly live in the same neighborhoods.

Green on the mound

Top arms by form — our 0–100 pitching score from ERA & WHIP. A shimmer means a historic pace (sub-2.00 ERA, sub-1.00 WHIP).

Stats via the MLB Stats API. Colors, form scores and power rankings are Baseball Lens's own.