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Aaron Laffey headshot

Players · L · Pitcher · 2015 regular season

Aaron Laffey

Age
30
B/T
L/L
Height
5' 11"
Weight
190 lb
Number
#32
Born
April 15, 1985 in Cumberland, MD, United States
MLB debut
August 4, 2007

Compare with…

dbWAR
1.3
Regular season, 13 season(s)
IP
7.1
ERA
3.68
FIP
5.72
K/9
3.7
FIP−
144
100 = avg

Aaron Laffey was a relief pitcher for the Colorado Rockies. In 2015 he struck out 3 batters over 7.1 innings across 3 appearances, going 1-0. His ERA of 3.68 was 7.1% lower than the league average of 3.96. Stripping out defence, his 5.72 FIP suggests that his ERA had some help behind him. He missed bats on 15.0% of swings (5.7% of every pitch he threw), walked 9.1% of the batters he faced and struck out 9.1%. His -0.1 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, 2015 regular season.

FIP5.72
K/93.7
WHIP1.50
WAR-.1

WAR by season

1.00.1-0.90708091011121315

Pitching Regular season

Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.

Trend
2015COL307.110083333.685.721.503.73.793144-0.1
2013NYM/TOR5312.200018109107.115.502.216.47.1184142-0.1
2012TOR2216100.24601005148374.565.591.364.33.3114139-0.9
2011SEA/NYY47053.1320672330213.884.961.655.13.598126-0.4
2010CLE29555.2230622828284.533.921.624.54.5111960.5
2009CLE2519121.27911406059574.444.541.624.44.21031050.8
2008CLE161693.25701034443314.234.881.434.13.0981130.5
2007CLE9949.1420542525124.563.731.344.62.2102831.0

Batting Regular season

Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.

Trend
2015COL22100001.500.500.500.0001.0000.0%50.0%.441+0.21660.0
2013NYM23000001.000.000.000.000.0000.0%33.3%.000-0.7-127-0.0
2012TOR11000000.000.000.000.000.0000.0%0.0%.000-0.2-119-0.0
2010CLE11000000.000.000.000.000.0000.0%0.0%.000-0.3-127-0.0
2008CLE12100000.500.500.500.000.5000.0%0.0%.448+0.21790.0

Separate from the regular season

Postseason Postseason

Wild Card through World Series. These games are counted on their own: none of them are in the regular-season tables, career totals, league context, leaderboards or dbWAR on this page.

Postseason pitching

Postseason Aaron Laffey's postseason pitching, by October and round. Not part of any regular-season figure on this page.
SeasonTeamRoundGGSIPWLSVHERHRBBSOERAWHIPK/9
2007 PostCLEALCS104.2000100130.000.435.8

Box-score and rate statistics only. wOBA, wRC+, FIP and dbWAR are measured against a full league season, and a postseason is a few teams playing each other for a month, so they are not computed for October.

Platoon splits

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

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.

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, how often it misses, and what hitters do with it.

Four-Seam Fastball67.3%17385.11,33043.4%14.3%30.4001.100
Sinker15.6%4083.81,75432.5%18.8%9——
Changeup9.7%2578.91,58240.0%14.3%6——
Slider7.0%1873.01,38838.9%25.0%2——
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. 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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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.