Players · R · Pitcher · 2017

Robbie Ross Jr.

Age: 28
B/T: L/L
Height: 5' 11"
Weight: 215 lb
Number: #46

Born: June 24, 1989 in Lexington, KY, United States
MLB debut: April 8, 2012

dbWAR: 1.5
IP: 9.0
ERA: 7.00
FIP: 3.82
K/9: 9.0
FIP−: 88

Robbie Ross Jr. was a relief pitcher for the Boston Red Sox. In 2017 he struck out 9 batters over 9.0 innings across 8 appearances, going 0-0. His ERA of 7.00 was 60.6% higher than the league average of 4.36. Stripping out defence, his 3.82 FIP suggests he pitched better than his ERA shows. He missed bats on 31.4% of swings (13.5% of every pitch he threw), walked 11.1% of the batters he faced and struck out 20.0%. His 0.1 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.

FIP3.82

K/99.0

WHIP1.89

WAR.1

WAR by season

Pitching

Standard and advanced, by season.


2017	BOS	8	9.0	0	0	0	12	7	9	5	7.00	3.82	1.89	9.0	5.0	161	88	0.1
2016	BOS	54	55.1	3	2	0	47	20	56	23	3.25	3.27	1.27	9.1	3.7	78	78	1.0
2015	BOS	54	60.2	0	2	6	59	26	53	20	3.86	4.02	1.30	7.9	3.0	97	102	0.4

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	22	19	5	0	3	7	.263	.364	.421	.347	31.8%
vs RHB	23	18	7	0	2	2	.389	.522	.389	.410	8.7%

Pitch sequencing

What Robbie Ross Jr. throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

Four-seamCutterCurveball

Select a count to see exactly what Robbie Ross Jr. throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	44.2%	72	91.4	2,057	43.1%	46.4%	14	—	—
Cutter	31.3%	51	86.4	2,254	45.1%	17.9%	13	—	—
Curveball	23.9%	39	78.6	2,513	33.3%	28.6%	10	—	—

Robbie Ross Jr.'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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Robbie Ross Jr.

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.