Players · A · Pitcher · 2021

R.J. Alaniz

Age: 30
B/T: R/R
Height: 6' 4"
Weight: 220 lb

Born: June 14, 1991 in McAllen, TX, United States
MLB debut: April 12, 2019

dbWAR: -.2
IP: 2.2
ERA: 3.38
FIP: 10.30
K/9: 10.1
FIP−: 241

R.J. Alaniz was a relief pitcher for the Cincinnati Reds. In 2021 he struck out 3 batters over 2.2 innings across 3 appearances, going 0-0. His ERA of 3.38 was 20.9% lower than the league average of 4.27. Stripping out defence, his 10.30 FIP suggests that his ERA had some help behind him. He missed bats on 22.2% of swings (8.7% of every pitch he threw), walked 23.1% of the batters he faced and struck out 23.1%. 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, 2021.

FIP10.30

K/910.1

WHIP1.50

WAR-.2

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2021	CIN	3	0	2.2	0	0	0	1	1	3	3	3.38	10.30	1.50	10.1	10.1	79	241	-0.2
2019	CIN/SEA	12	0	15.2	1	0	0	19	16	13	7	9.19	5.38	1.66	7.5	4.0	204	120	-0.1

Batting

Standard and advanced, by season.

																					Trend
2021	CIN	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-112	-0.0
2019	CIN	1	1	1	0	1	0	0	0	1.000	1.000	1.000	.000	1.000	0.0%	0.0%	.872	+0.5	468	0.1

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	8	6	1	1	2	2	.167	.375	.667	.429	25.0%
vs RHB	5	3	0	0	1	1	.000	.400	.000	.296	20.0%

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 R.J. Alaniz throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

SinkerChangeupSlider

Select a count to see exactly what R.J. Alaniz throws in it.

Pitch arsenal

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

Season


Sinker	52.2%	36	92.8	2,128	58.3%	28.6%	2	—	—
Changeup	24.6%	17	86.3	1,585	47.1%	25.0%	6	—	—
Slider	23.2%	16	83.7	2,343	37.5%	0.0%	1	—	—

R.J. Alaniz'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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R.J. Alaniz

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.