Pitcher · 2015

Roman Mendez

Age: 25
B/T: R/R
Height: 6' 3"
Weight: 245 lb
Number: #55

Born: July 25, 1990 in San Pedro de Macoris, Dominican Republic
MLB debut: July 8, 2014

dbWAR: -.2
IP: 13.2
ERA: 5.27
FIP: 5.55
K/9: 6.6
FIP−: 140

Roman Mendez is a relief pitcher for the Texas Rangers. In 2015 he struck out 10 batters over 13.2 innings across 15 appearances, going 0-1. His ERA of 5.27 was 33.0% higher than the league average of 3.96. Stripping out defence, his 5.55 FIP suggests the ERA was no fluke. He missed bats on 20.2% of swings (8.1% of every pitch he threw), walked 13.8% of the batters he faced and struck out 17.2%. 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.

FIP5.55

K/96.6

WHIP1.61

WAR-.2

Pitching

Standard and advanced, by season.

																			Trend
2015	15	0	13.2	0	1	0	14	8	10	8	5.27	5.55	1.61	6.6	5.3	133	140	-0.2	—

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	30	23	6	1	7	4	.261	.433	.435	.385	13.3%
vs RHB	28	26	8	1	1	6	.308	.357	.538	.389	21.4%

Pitch sequencing

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

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Four-seamSliderChangeupSinkerSplitter

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Pitch arsenal

What he throws, how hard, and how often it misses in 2015.


Four-Seam Fastball	50.6%	119	93.2	2,218	37.0%	10.9%
Slider	23.4%	55	83.2	920	58.2%	23.1%
Changeup	15.3%	36	82.3	1,232	41.7%	47.1%
Sinker	7.7%	18	93.8	1,553	27.8%	0.0%

Roman Mendez'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.

Head to head

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Roman Mendez

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.