Players · A · Pitcher · 2015

David Aardsma

Age: 34
B/T: R/R
Height: 6' 3"
Weight: 215 lb
Number: #53

Born: December 27, 1981 in Denver, CO, United States
MLB debut: April 6, 2004

dbWAR: -.2
IP: 30.2
ERA: 4.70
FIP: 4.86
K/9: 10.3
FIP−: 123

David Aardsma was a relief pitcher for the Atlanta Braves. In 2015 he struck out 35 batters over 30.2 innings across 33 appearances, going 1-1. His ERA of 4.70 was 18.5% higher than the league average of 3.96 — 11th of 23 on his team, and 382nd of 513 among MLB pitchers with 20+ innings. Stripping out defence, his 4.86 FIP suggests the ERA was no fluke. He missed bats on 31.9% of swings (16.3% of every pitch he threw), walked 10.9% of the batters he faced and struck out 27.1%. His -0.2 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.

FIP4.86

K/910.3

WHIP1.27

WAR-.2

Pitching

Standard and advanced, by season.

																				Trend
2015	ATL	33	0	30.2	1	1	0	25	16	35	14	4.70	4.86	1.27	10.3	4.1	119	123	-0.2	—

Batting

Standard and advanced, by season.

																					Trend
2015	ATL	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-125	-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	42	34	12	3	6	7	.353	.463	.676	.476	16.7%
vs RHB	87	78	13	3	8	28	.167	.241	.346	.256	32.2%

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 David Aardsma throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

Four-seamSliderSplitterIN

Select a count to see exactly what David Aardsma throws in it.

Pitch arsenal

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


Four-Seam Fastball	66.1%	325	91.4	2,217	50.5%	26.9%	79	.278	.942
Slider	25.4%	125	81.0	339	57.6%	46.9%	25	.000	.037
Splitter	5.9%	29	83.7	1,358	20.7%	25.0%	8	—	—
Intentional Ball	2.4%	12	82.4	1,869	0.0%	—	0	—	—

David Aardsma'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 David Aardsma beside up to three others.

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David Aardsma

Similar players

Nearest 2015 seasons by command, run prevention and role, on rate statistics rather than totals.

Zac RosscupCHC

ERA: 4.39
FIP: 4.86
SO: 29
WAR: -0.1

Very close

Steve DelabarTOR

ERA: 5.22
FIP: 4.84
SO: 30
WAR: -0.2

Brandon FinneganKC

ERA: 3.56
FIP: 4.80
SO: 45
WAR: -0.1

Brad BoxbergerTB

ERA: 3.71
FIP: 4.26
SO: 74
WAR: 0.1

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.