Players · A · Pitcher · 2021

Jake Arrieta

Age: 35
B/T: R/R
Height: 6' 4"
Weight: 230 lb
Number: #34

Born: March 6, 1986 in Farmington, MO, United States
MLB debut: June 10, 2010

dbWAR: 17.4
IP: 98.2
ERA: 7.39
FIP: 6.17
K/9: 7.6
FIP−: 145

Jake Arrieta was a starting pitcher for the Chicago Cubs. In 2021 he struck out 83 batters over 98.2 innings across 24 appearances, 24 of them starts, going 5-14. His ERA of 7.39 was 73.2% higher than the league average of 4.27 — the second worst on his team, and 548th of 567 among MLB pitchers with 20+ innings. Stripping out defence, his 6.17 FIP suggests he pitched better than his ERA shows. He missed bats on 18.2% of swings (7.9% of every pitch he threw), walked 9.4% of the batters he faced and struck out 17.7%. His -0.9 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, 2021.

FIP6.17

K/97.6

WHIP1.77

WAR-.9

WAR by season

Pitching

Standard and advanced, by season.


2021	CHC/SD	24	24	98.2	5	14	131	81	83	44	7.39	6.17	1.77	7.6	4.0	173	145	-0.9
2020	PHI	9	9	44.1	4	4	51	25	32	16	5.08	4.66	1.51	6.5	3.2	114	105	0.5
2019	PHI	24	24	135.2	8	8	149	70	110	51	4.64	4.89	1.47	7.3	3.4	103	108	1.1
2018	PHI	31	31	172.2	10	11	165	76	138	57	3.96	4.26	1.29	7.2	3.0	95	103	1.9
2017	CHC	30	30	168.1	14	10	150	66	163	55	3.53	4.16	1.22	8.7	2.9	81	95	2.6
2016	CHC	31	31	197.1	18	8	138	68	190	76	3.10	3.52	1.08	8.7	3.5	74	84	3.7
2015	CHC	33	33	229.0	22	6	150	45	236	48	1.77	2.35	0.86	9.3	1.9	45	59	7.0

Batting

Standard and advanced, by season.


2021	CHC/SD	22	30	3	0	0	2	16	.130	.231	.130	.000	.429	6.7%	53.3%	.186	-3.3	9	0.1
2019	PHI	23	50	7	0	4	1	19	.156	.174	.178	.022	.269	2.0%	38.0%	.156	-7.1	-13	0.0
2018	PHI	27	50	6	1	3	3	27	.133	.188	.200	.067	.294	6.0%	54.0%	.178	-5.7	3	0.2
2017	CHC	29	64	8	1	5	1	32	.131	.145	.213	.082	.250	1.6%	50.0%	.154	-9.1	-16	0.0
2016	CHC	27	70	17	2	7	4	28	.262	.304	.415	.154	.429	5.7%	40.0%	.313	-0.5	98	0.9
2015	CHC	30	83	12	2	2	1	45	.152	.163	.266	.114	.313	1.2%	54.2%	.185	-8.6	8	0.3

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2021. 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	246	207	66	11	31	42	.319	.407	.541	.402	17.1%
vs RHB	223	203	65	13	13	41	.320	.368	.586	.402	18.4%

Spray chart

Where every ball he put in play landed, 2021.

Loading 11 batted balls…

Hot and cold zones

Batting average by pitch location, 2021.

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 .243.

Pitch sequencing

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

ShowBatter

SinkerSliderCurveballChangeup

Select a count to see exactly what Jake Arrieta throws in it.

Pitch arsenal

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

Season


Sinker	52.7%	920	91.4	2,084	43.6%	11.9%	209	.373	1.082
Slider	23.8%	415	88.3	2,277	44.8%	21.6%	100	.260	.885
Curveball	15.4%	269	80.4	2,690	44.2%	36.3%	53	.189	.611
Changeup	8.1%	142	87.0	1,787	26.8%	12.7%	48	.354	.877

Jake Arrieta'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 Jake Arrieta beside up to three others.

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Jake Arrieta

Similar players

Nearest 2021 seasons by command, run prevention and role, on rate statistics rather than totals.

Reid DetmersLAA

ERA: 7.40
FIP: 6.36
SO: 19
WAR: -0.2

Very close

Humberto MejíaAZ

ERA: 7.25
FIP: 5.50
SO: 20
WAR: -0.0

Very close

Matt ShoemakerMIN

ERA: 8.06
FIP: 6.57
SO: 40
WAR: -1.0

J.C. MejíaCLE

ERA: 8.25
FIP: 6.15
SO: 47
WAR: -0.6

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.