Players · M · Pitcher · 2017

Seth Maness

Kansas City Royals American League Central

Age: 29
B/T: R/R
Height: 6' 0"
Weight: 190 lb

Born: October 14, 1988 in Pinehurst, NC, United States
MLB debut: May 3, 2013

dbWAR: .5
IP: 9.2
ERA: 3.72
FIP: 6.99
K/9: 3.7
FIP−: 160

Seth Maness was a relief pitcher for the Kansas City Royals. In 2017 he struck out 4 batters over 9.2 innings across 8 appearances, going 1-0. His ERA of 3.72 was 14.5% lower than the league average of 4.36. Stripping out defence, his 6.99 FIP suggests that his ERA had some help behind him. He missed bats on 12.2% of swings (5.5% of every pitch he threw), walked 4.4% of the batters he faced and struck out 8.9%. 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, 2017.

FIP6.99

K/93.7

WHIP1.86

WAR-.2

WAR by season

Pitching

Standard and advanced, by season.


2017	KC	8	9.2	1	0	0	16	4	4	2	3.72	6.99	1.86	3.7	1.9	85	160	-0.2
2016	STL	29	31.2	2	2	0	34	12	16	8	3.41	3.71	1.33	4.5	2.3	81	89	0.3
2015	STL	76	63.1	4	2	3	77	30	46	13	4.26	3.78	1.42	6.5	1.8	108	95	0.5

Batting

Standard and advanced, by season.

																					Trend
2016	STL	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-120	-0.0
2015	STL	3	3	0	0	0	0	0	2	.000	.000	.000	.000	.000	0.0%	66.7%	.000	-0.8	-125	-0.1

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2017. 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	19	18	6	2	1	3	.333	.368	.667	.431	15.8%
vs RHB	26	24	10	1	1	1	.417	.423	.583	.422	3.8%

Pitch sequencing

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

ShowBatter

SinkerChangeupCurveball

Select a count to see exactly what Seth Maness throws in it.

Pitch arsenal

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

Season


Sinker	54.5%	90	88.0	1,836	40.0%	5.7%	20	.500	1.222
Changeup	20.6%	34	82.4	1,517	32.4%	15.8%	11	—	—
Curveball	17.0%	28	79.2	2,170	50.0%	25.0%	6	—	—
Four-Seam Fastball	7.9%	13	88.1	1,884	38.5%	12.5%	5	—	—

Seth Maness'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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Seth Maness

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.