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Jason Grilli headshot

Pitcher · 2017

Jason Grilli

Age
41
B/T
R/R
Height
6' 5"
Weight
235 lb
Number
#49
Born
November 11, 1976 in Royal Oak, MI, USA
MLB debut
May 11, 2000
dbWAR
.6
3 season(s)
IP
40.0
ERA
6.30
FIP
6.08
K/9
10.8
FIP−
140
100 = avg

Jason Grilli is a relief pitcher for the Toronto Blue Jays. In 2017 he struck out 48 batters over 40.0 innings across 46 appearances, going 2-5. His ERA of 6.30 was 44.6% higher than the league average of 4.36 — 13th of 17 on his team, and 471st of 527 among MLB pitchers with 20+ innings. Stripping out defence, his 6.08 FIP suggests the ERA was no fluke. He missed bats on 25.8% of swings (12.5% of every pitch he threw), walked 9.8% of the batters he faced and struck out 26.1%. 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, 2017.

FIP6.08
K/910.8
WHIP1.60
WAR-.5

Pitching

Standard and advanced, by season.

Trend
201746040.0251462848186.306.081.6010.84.0145140-0.5
201667059.0764442781324.124.331.2912.44.9981030.2
201536033.23424281145102.942.121.1312.02.774540.9

Platoon splits

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

Opponent batting by the side the hitter bats from, 2017. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB64541441017.259.375.556.39726.6%
vs RHB120111328831.288.342.586.39125.8%

Pitch sequencing

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

ShowBatter
Four-seamSliderSinkerChangeup

Select a count to see exactly what Jason Grilli throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2017.

Four-Seam Fastball60.6%48592.82,36051.3%26.1%
Slider33.6%26981.02,67445.4%27.4%
Sinker3.0%2492.12,26629.2%18.2%
Changeup2.5%2085.82,09420.0%0.0%
Jason Grilli'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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Jason Grilli

Similar players

Nearest 2017 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.