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Spencer Schwellenbach

ATL · Starting pitcherBTB Value 6.49BTB Trust 89th

What these mean
BTB Value
His pitches' physics graded on what they should produce this season, 5 = 2025 league average, 1 point = 1 SD.
BTB Trust
Percentile among MLB pitchers (SP 50+ IP, RP 20+ IP), starters and relievers in one pool; higher is better. A season read of how far the player can be trusted: it describes the player, not tonight's line or projection.

Bats R · Throws R · Age 26 · 6' 1", 200 lb · Saginaw, MI, USA

BTB Trust ranks Spencer Schwellenbach in the 89th percentile of MLB pitchers for 2025.

2025 season
G
17
IP
110.2
ERA
3.09
WHIP
0.97
K
108
K%
24.9%
BB%
4.2%

Regular season, through Sep 28, 2025.

BTB Pro

The full page is for members.

  • His strikeout projection for every start, with the likely range
  • The book's line beside our number, and how far apart they are
  • The matchup: tonight's lineup, his pitch mix and the park
  • Every past projection beside what happened
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