DataBaseball
2026
Aaron Laffey headshot

P · 2015

Aaron Laffey

Age
30
B/T
L/L
Height
5' 11"
Weight
190 lb
Number
#32
Born
April 15, 1985 in Cumberland, MD, USA
MLB debut
August 4, 2007
dbWAR
-.1
2 season(s)
PA
2
AVG
.500
OBP
.500
SLG
.500
wRC+
166
100 = avg

Aaron Laffey is a pitcher for the Colorado Rockies. In 2015 he hit 0 home runs and knocked in 0 RBIs, notching 1 hit across 2 plate appearances in 2 games. His batting average was .500, 96.5% higher than the league average of .254. He reached base at a .500 clip and slugged .500, for an OPS of 1.000, 38.6% higher than the league mark of .721. He made contact on 66.7% of his swings. Adjusted for his ballpark and league, his 166 wRC+ puts his offence 66% above average. That comes to 0.0 dbWAR — +0.2 runs with the bat, -0.0 on the bases, +0.0 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, 2015.

wRC+166
wOBA.441
ISO.000
BB%0.0%
WAR.0

How the WAR is built

Runs above replacement, 2015. These four terms sum to +0.3 runs, divided by runs-per-win to give WAR.

Batting+0.2Baserunning-0.0Position+0.0Replacement+0.1
BattingBaserunningPositionReplacement

Batting

Standard and advanced, by season.

Trend
201522100001.500.500.500.0001.0000.0%50.0%.441+0.21660.0

Pitching

Standard and advanced, by season.

Trend
2015307.110083333.685.721.503.73.793144-0.1

Platoon splits

How he hits left- and right-handed pitching.

Batting by the hand the pitcher throws with, 2015. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs RHP221001.500.500.500.44150.0%
Opponent batting by the side the hitter bats from, 2015. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB14103121.300.462.700.4747.1%
vs RHB19175012.294.333.294.28410.5%

Spray chart

Where every ball he put in play landed, 2015.

Loading 1 batted balls…

Hot and cold zones

Batting average by pitch location, 2015.

1 AB
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 Aaron Laffey 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.
SituationPAABHHRRBIBBSOAVGOBPSLGwOBA
All situations2.500.500.500.441
Bases empty · thin11100001.0001.0001.000.881
Runner on first · thin1100001.000.000.000.000
Runners on · thin1100001.000.000.000.000

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, 2015.

Pitch sequencing

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

ShowBatter
UnknownCutterFour-seamSinker

Select a count to see exactly what Aaron Laffey throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2015.

Unknown35.2%3732.4%14.3%
Cutter21.9%2386.374843.5%23.1%
Four-Seam Fastball21.0%2286.51,10440.9%12.5%
Sinker14.3%1585.61,4710.0%0.0%
Aaron Laffey'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

Put Aaron Laffey beside up to three others.

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Aaron Laffey
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.