Players · K · RF · 2012 regular season

Erik Komatsu

St. Louis Cardinals National League CentralRF

Age: 25
B/T: L/L
Height: 5' 10"
Weight: 175 lb
Number: #44

Born: October 1, 1987 in Camarillo, CA, United States
MLB debut: April 6, 2012

dbWAR: -.2
PA: 58
AVG: .216
OBP: .293
SLG: .216
wRC+: 46

Erik Komatsu was a right fielder for the St. Louis Cardinals. In 2012 he hit 0 home runs and knocked in 1 RBI, notching 11 hits across 58 plate appearances in 26 games. His batting average was .216, 15.3% lower than the league average of .255. He reached base at a .293 clip and slugged .216, for an OPS of .509, 29.8% lower than the league mark of .724. He made contact on 90.3% of his swings. Adjusted for his ballpark and league, his 46 wRC+ puts his offence 54% below average. That comes to -0.2 dbWAR — -3.6 runs with the bat, +0.0 for the ballpark, -0.1 on the bases, +0.2 on double plays, -0.4 for the position he plays, against replacement level. It includes no fielding: defensive runs are proprietary and are not estimated here, so the figure credits playing a demanding position but not playing it well.

League context

Percentile among qualified batters, 2012 regular season.

wRC+46

wOBA.240

ISO.000

BB%10.3%

WAR-.2

How the WAR is built

Runs above replacement, 2012. These terms sum to -2.3 runs, divided by runs-per-win to give WAR. There is no fielding term.

BattingBallparkBaserunningDouble playsPositionReplacement

Batting Regular season

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

																					Trend
2012	STL/MIN	26	58	11	0	1	0	6	5	.216	.293	.216	.000	.234	10.3%	8.6%	.240	-3.6	46	-0.2	—

Platoon splits

How he hits left- and right-handed pitching.

Batting by the hand the pitcher throws with, 2012. 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 LHP	6	5	2	0	1	0	.400	.500	.400	.412	0.0%
vs RHP	52	46	9	0	5	5	.196	.269	.196	.221	9.6%

Spray chart

Where every ball he put in play landed, 2012.

Loading 44 batted balls…

Hot and cold zones

Batting average by pitch location, 2012.

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 .254.

Situational hitting

How Erik Komatsu hits by base state, outs, score and late-game pressure — each read against his own season line.

Split by

By who is on base when he comes up. The season line is repeated as the baseline.
Situation	PA	AB	H	HR	RBI	BB	SO	AVG	OBP	SLG	wOBA
All situations	58	—	—	—	—	—	—	.216	.293	.216	.240
Bases empty	30	25	5	0	0	5	2	.200	.333	.200	.264
Runner on first · thin	10	9	3	0	0	1	1	.333	.400	.333	.336
Runners on	28	26	6	0	1	1	3	.231	.250	.231	.215
RISP · thin	18	17	3	0	1	0	2	.176	.167	.176	.148

Runners on includes runners in scoring position, which is the convention every reference uses. Rows under 25 plate appearances are marked thin — at that size a rate moves several dozen points on one hit. Counted from play-by-play, 2012.

Not in the 2012 data: exit velocity and launch angle, first recorded in 2015. 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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Erik Komatsu

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.