Players · B · Pitcher · 2021

Rex Brothers

Age: 34
B/T: L/L
Height: 6' 0"
Weight: 205 lb
Number: #49

Born: December 18, 1987 in Unionville, TN, United States
MLB debut: June 6, 2011

dbWAR: .2
IP: 53.0
ERA: 5.26
FIP: 4.87
K/9: 12.7
FIP−: 114

Rex Brothers was a relief pitcher for the Chicago Cubs. In 2021 he struck out 75 batters over 53.0 innings across 57 appearances, going 3-2. His ERA of 5.26 was 23.4% higher than the league average of 4.27 — 15th of 20 on his team, and 428th of 567 among MLB pitchers with 20+ innings. Stripping out defence, his 4.87 FIP suggests he pitched better than his ERA shows. He missed bats on 33.9% of swings (14.7% of every pitch he threw), walked 14.8% of the batters he faced and struck out 31.8%. His -0.0 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.

FIP4.87

K/912.7

WHIP1.43

WAR-.0

WAR by season

Pitching

Standard and advanced, by season.


2021	CHC	57	53.0	3	2	1	41	31	75	35	5.26	4.87	1.43	12.7	5.9	123	114	-0.0
2020	CHC	3	3.1	0	0	0	2	3	8	3	8.10	8.89	1.50	21.6	8.1	182	200	-0.1
2018	ATL	1	0.0	0	0	0	0	1	0	2	—	—	—	—	—	—	—	—
2017	ATL	27	23.2	4	3	0	23	19	33	12	7.23	3.66	1.48	12.5	4.6	166	84	0.3
2015	COL	17	10.1	1	0	0	9	2	5	8	1.74	4.49	1.65	4.4	7.0	44	113	0.0

Batting

Standard and advanced, by season.

																					Trend
2021	CHC	2	2	0	0	0	0	0	2	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.5	-118	-0.0	—

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	98	78	14	3	17	31	.179	.347	.333	.315	31.6%
vs RHB	138	115	27	6	18	44	.235	.348	.443	.344	31.9%

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

ShowBatter

Four-seamSlider

Select a count to see exactly what Rex Brothers throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	65.5%	655	94.5	2,106	46.0%	20.9%	101	.287	.991
Slider	34.4%	344	86.2	2,089	43.9%	55.2%	92	.130	.441

Rex Brothers'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

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Rex Brothers

Similar players

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

Sam HowardPIT

ERA: 5.60
FIP: 4.86
SO: 60
WAR: -0.0

Very close

Demarcus EvansTEX

ERA: 5.13
FIP: 4.58
SO: 33
WAR: 0.1

Amir GarrettCIN

ERA: 6.04
FIP: 4.89
SO: 61
WAR: 0.0

Jake DiekmanOAK

ERA: 3.86
FIP: 4.46
SO: 83
WAR: 0.2

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.