Players · B · Pitcher · 2007 regular season
Jonah Bayliss
- Age
- 27
- B/T
- R/R
- Height
- 6' 1"
- Weight
- 200 lb
- Number
- #54
- Born
- August 13, 1980 in North Adams, MA, United States
- MLB debut
- June 21, 2005
- dbWAR
- -.4 Regular season, 3 season(s)
- IP
- 37.2
- ERA
- 8.36
- FIP
- 6.05
- K/9
- 6.9
- FIP−
- 135 100 = avg
Jonah Bayliss was a relief pitcher for the Pittsburgh Pirates. In 2007 he struck out 29 batters over 37.2 innings across 39 appearances, going 4-3. His ERA of 8.36 was 87.0% higher than the league average of 4.47 — 13th of 15 on his team, and 476th of 484 among MLB pitchers with 20+ innings. Stripping out defence, his 6.05 FIP suggests he pitched better than his ERA shows. He missed bats on 24.1% of swings (11.9% of every pitch he threw), walked 10.1% of the batters he faced and struck out 16.2%. His -0.5 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2007 regular season.
WAR by season
Pitching Regular season
Standard and advanced, by season. Regular-season games only.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 52 | 42 | 14 | 5 | 10 | 8 | .333 | .462 | .786 | .516 | 15.4% |
| vs RHB | 127 | 116 | 37 | 3 | 8 | 21 | .319 | .370 | .483 | .374 | 16.5% |
Not in the 2007 data: pitch types, recorded in every park from 2008. The play-by-play goes back to 2005, but the measurements on each pitch and batted ball arrived later, so the panels built from them are left off this season.
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Similar players
Nearest 2007 seasons by command, run prevention and role, on rate statistics rather than totals.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.