DataBaseball
2026
Anthony Bass headshot

Pitcher · 2023

Anthony Bass

Age
36
B/T
R/R
Height
6' 2"
Weight
205 lb
Number
#45
Born
November 1, 1987 in Dearborn, MI, USA
MLB debut
June 13, 2011
dbWAR
2.7
8 season(s)
IP
20.0
ERA
4.95
FIP
4.66
K/9
8.6
FIP−
107
100 = avg

Anthony Bass is a relief pitcher for the Toronto Blue Jays. In 2023 he struck out 19 batters over 20.0 innings across 22 appearances, going 0-0. His ERA of 4.95 was 14.3% higher than the league average of 4.33 — 13th of 16 on his team, and 390th of 550 among MLB pitchers with 20+ innings. Stripping out defence, his 4.66 FIP suggests the ERA was no fluke. He missed bats on 30.8% of swings (13.6% of every pitch he threw), walked 10.2% of the batters he faced and struck out 21.6%. His 0.0 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, 2023.

FIP4.66
K/98.6
WHIP1.40
WAR.0

Pitching

Standard and advanced, by season.

Trend
202322020.000019111994.954.661.408.64.01141070.0
202273070.1430511273201.543.001.019.32.639761.2
202170161.1390552658243.824.931.298.53.589116-0.1
202026025.223717102193.513.621.017.43.279810.4
201944048.0245301943173.563.900.988.13.279870.5
201816015.10001851432.932.771.378.21.871670.3
2017205.20001491014.295.102.471.60.0328117-0.0
201533064.0000663245204.503.731.346.32.8114940.5

Platoon splits

How left- and right-handed hitters fare against him.

Opponent batting by the side the hitter bats from, 2023. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB342951510.172.294.310.25129.4%
vs RHB544814249.292.333.542.36416.7%

Pitch sequencing

What Anthony Bass throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter
SliderSinkerFour-seamSplitter

Select a count to see exactly what Anthony Bass throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2023.

Slider55.9%18185.42,25348.6%39.5%
Sinker29.6%9694.52,02349.0%15.2%
Four-Seam Fastball7.7%2594.42,06428.0%14.3%
Splitter6.8%2286.81,55940.9%30.0%
Anthony Bass's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters.

Head to head

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Anthony Bass

Similar players

Nearest 2023 seasons by command, run prevention and role, on rate statistics rather than totals.

How these are computed

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.