DataBaseball
2026
Denny Stark headshot

Players · S · Pitcher · 2009 regular season

Denny Stark

Age
35
B/T
R/R
Height
6' 2"
Weight
210 lb
Number
#20
Born
October 27, 1974 in Edgerton, OH, United States
MLB debut
September 15, 1999

Compare with…

dbWAR
-.3
Regular season, 2009 only
IP
11.0
ERA
6.55
FIP
6.92
K/9
5.7
FIP−
160
100 = avg

Denny Stark was a relief pitcher for the Seattle Mariners. In 2009 he struck out 7 batters over 11.0 innings across 9 appearances, going 0-1. His ERA of 6.55 was 51.5% higher than the league average of 4.32. Stripping out defence, his 6.92 FIP suggests that his ERA had some help behind him. He missed bats on 17.0% of swings (7.0% of every pitch he threw), walked 18.5% of the batters he faced and struck out 13.0%. His -0.3 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, 2009 regular season.

FIP6.92
K/95.7
WHIP2.09
WAR-.3

Pitching Regular season

Standard and advanced, by season. Regular-season games only. Seasons on file run 2009; his career began in 1999, and earlier seasons are not in this data yet.

Trend
2009SEA9011.00101387106.556.922.095.78.2151160-0.3—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2009. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB28217273.333.500.667.50210.7%
vs RHB26226034.273.346.273.29115.4%

Pitch sequencing

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

ShowBatter
Four-seamChangeupSliderSinker

Select a count to see exactly what Denny Stark throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Four-Seam Fastball63.8%15592.31,87947.7%20.0%27.259.855
Changeup16.9%4184.51,73729.3%11.8%6——
Slider9.9%2481.969725.0%22.2%6——
Sinker9.5%2392.72,33639.1%0.0%5——
Denny Stark'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. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

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Denny Stark
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.