Players · L · Pitcher · 2015

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

dbWAR: -.0
IP: 7.1
ERA: 3.68
FIP: 5.72
K/9: 3.7
FIP−: 144

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.

FIP5.72

K/93.7

WHIP1.50

WAR-.1

Pitching

Standard and advanced, by season.

																				Trend
2015	COL	3	0	7.1	1	0	0	8	3	3	3	3.68	5.72	1.50	3.7	3.7	93	144	-0.1	—

Batting

Standard and advanced, by season.

																					Trend
2015	COL	2	2	1	0	0	0	0	1	.500	.500	.500	.000	1.000	0.0%	50.0%	.441	+0.2	166	0.0	—

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.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	14	10	3	1	2	1	.300	.462	.700	.474	7.1%
vs RHB	19	17	5	0	1	2	.294	.333	.294	.284	10.5%

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.

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.


Unknown	35.2%	37	—	—	32.4%	14.3%	11	—	—
Cutter	21.9%	23	86.3	748	43.5%	23.1%	9	—	—
Four-Seam Fastball	21.0%	22	86.5	1,104	40.9%	12.5%	3	—	—
Sinker	14.3%	15	85.6	1,471	0.0%	0.0%	4	—	—

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.

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.