Players · R · Pitcher · 2020

Trevor Rosenthal

Kansas City Royals American League Central

Age: 30
B/T: R/R
Height: 6' 2"
Weight: 230 lb
Number: #26

Born: May 29, 1990 in Lee's Summit, MO, United States
MLB debut: July 18, 2012

dbWAR: 3.9
IP: 23.2
ERA: 1.90
FIP: 2.22
K/9: 14.5
FIP−: 50

Trevor Rosenthal was a relief pitcher for the Kansas City Royals. In 2020 he struck out 38 batters over 23.2 innings across 23 appearances, going 1-0. His ERA of 1.90 was 57.3% lower than the league average of 4.45 — the second best on his team, and 27th of 323 among MLB pitchers with 20+ innings. Stripping out defence, his 2.22 FIP suggests that his ERA had some help behind him. He missed bats on 38.1% of swings (17.6% of every pitch he threw), walked 8.8% of the batters he faced and struck out 41.8%. His 0.8 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, 2020.

FIP2.22

K/914.5

WHIP0.85

WAR.8

WAR by season

Pitching

Standard and advanced, by season.


2020	KC/SD	23	23.2	1	0	11	12	5	38	8	1.90	2.22	0.85	14.5	3.0	43	50	0.8
2019	WSH/DET	22	15.1	0	1	0	11	23	17	26	13.50	6.87	2.41	10.0	15.3	300	152	-0.3
2017	STL	50	47.2	3	4	11	37	18	76	20	3.40	2.17	1.20	14.3	3.8	78	50	1.4
2016	STL	45	40.1	2	4	14	48	20	56	29	4.46	3.72	1.91	12.5	6.5	107	89	0.4
2015	STL	68	68.2	2	4	48	62	16	83	25	2.10	2.42	1.27	10.9	3.3	53	61	1.6

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	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-125	-0.0

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2020. 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	49	42	5	0	5	22	.119	.224	.167	.194	44.9%
vs RHB	42	39	7	2	3	16	.179	.238	.436	.284	38.1%

Pitch sequencing

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

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Four-seamSliderChangeup

Select a count to see exactly what Trevor Rosenthal throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	67.5%	257	97.9	2,453	55.6%	35.0%	52	.154	.462
Slider	20.5%	78	87.5	2,394	51.3%	36.1%	19	.158	.674
Changeup	8.4%	32	87.8	1,578	46.9%	81.8%	6	—	—
Sinker	3.7%	14	98.7	2,487	35.7%	33.3%	4	—	—

Trevor Rosenthal'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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Trevor Rosenthal

Similar players

Nearest 2020 seasons by command, run prevention and role, on rate statistics rather than totals.

Mike MayersLAA

ERA: 2.10
FIP: 2.19
SO: 43
WAR: 1.0

Tyler DuffeyMIN

ERA: 1.88
FIP: 2.57
SO: 31
WAR: 0.7

Richard RodríguezPIT

ERA: 2.70
FIP: 2.85
SO: 34
WAR: 0.6

Jake McGeeLAD

ERA: 2.66
FIP: 1.67
SO: 33
WAR: 0.8

Comparable

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.