Players · K · Pitcher · 2009 regular season

John Koronka

Age: 29
B/T: L/L
Height: 6' 0"
Weight: 200 lb
Number: #49

Born: July 3, 1980 in Clearwater, FL, United States
MLB debut: June 1, 2005

dbWAR: .1
IP: 7.1
ERA: 11.05
FIP: 11.96
K/9: 4.9
FIP−: 277

John Koronka was a starting pitcher for the Florida Marlins. In 2009 he struck out 4 batters over 7.1 innings across 2 appearances, 2 of them starts, going 0-2. His ERA of 11.05 was 155.6% higher than the league average of 4.32. Stripping out defence, his 11.96 FIP suggests that his ERA had some help behind him. He missed bats on 9.3% of swings (3.2% of every pitch he threw), walked 17.1% of the batters he faced and struck out 9.8%. 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, 2009 regular season.

FIP11.96

K/94.9

WHIP2.45

WAR-.5

WAR by season

Pitching Regular season

Standard and advanced, by season. Regular-season games only.


2009	FLA	2	2	7.1	0	2	11	9	4	7	11.05	11.96	2.45	4.9	8.6	256	277	-0.5
2007	TEX	2	2	10.1	0	2	16	9	2	5	7.84	4.59	2.03	1.7	4.4	175	103	0.1
2006	TEX	23	23	125.0	7	7	145	79	61	47	5.69	5.19	1.54	4.4	3.4	126	115	0.6
2005	CHC	4	3	15.2	1	2	19	13	10	8	7.47	4.93	1.72	5.7	4.6	174	115	0.0

Batting Regular season

Standard and advanced, by season. Regular-season games only.


2009	FLA	1	2	0	1	.000	.000	.000	.000	—	0.0%	50.0%	.000	-0.5	-121	-0.0
2007	TEX	1	2	0	2	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.6	-128	-0.0
2006	TEX	3	6	0	2	.000	.000	.000	.000	.000	0.0%	33.3%	.000	-1.7	-122	-0.1
2005	CHC	3	5	1	3	.000	.200	.000	.000	.000	20.0%	60.0%	.142	-0.8	-28	-0.0

Platoon splits

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

Season

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.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	13	10	4	2	1	1	.400	.455	1.000	.604	7.7%
vs RHB	28	22	7	2	6	3	.318	.464	.636	.476	10.7%

Hot and cold zones

Batting average by pitch location, 2009.

Below averageLeague averageAbove average

Batting average by location of the pitch that ended each plate appearance, catcher's view. The bordered square is the strike zone; the outer band is chase territory. Cells with fewer than 8 at-bats are left grey rather than shown as signal. League average on the same attribution is .262.

Pitch sequencing

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

ShowBatter

Four-seamChangeupSliderCurveball

Select a count to see exactly what John Koronka throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	59.7%	92	88.4	2,090	42.4%	0.0%	19	.316	1.143
Changeup	22.7%	35	79.3	2,210	31.4%	9.1%	6	—	—
Slider	12.3%	19	79.8	586	26.3%	33.3%	6	—	—

John Koronka'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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John Koronka

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.