What does RP mean in baseball?

RP is a relief pitcher in baseball. A pitcher who comes in after the start, usually for an inning at a time and often against a chosen part of the order.

What a relief pitcher looks like

268 relief pitchers are on MLB rosters right now, and the median one is 6' 2" and 214 lb.

On rosters
268
Median height
6' 2"
Median weight
214 lb
Median age
29

Since 2020 a reliever must face three batters or finish the half-inning, which ended the one-batter specialist.

Saves at the position, 2026

The median relief pitcher with a figure at all posted 2 saves. These five led the position.

  1. 1Bryan BakerTB40
  2. 2Cade SmithCLE39
  3. 3Riley O'BrienSTL38
  4. 4Mason MillerSD37
  5. 5Aroldis ChapmanBOS34
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