Players · R · Pitcher · 2015

Ken Roberts

Age: 27
B/T: L/L
Height: 6' 1"
Weight: 200 lb
Number: #67

Born: March 9, 1988 in Murfreesboro, TN, United States
MLB debut: May 3, 2015

dbWAR: .3
IP: 13.2
ERA: 7.24
FIP: 3.13
K/9: 4.0
FIP−: 79

Ken Roberts was a relief pitcher for the Colorado Rockies. In 2015 he struck out 6 batters over 13.2 innings across 15 appearances, going 1-1. His ERA of 7.24 was 82.8% higher than the league average of 3.96. Stripping out defence, his 3.13 FIP suggests he pitched better than his ERA shows. He missed bats on 15.3% of swings (7.2% of every pitch he threw), walked 4.6% of the batters he faced and struck out 9.2%. His 0.3 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.

FIP3.13

K/94.0

WHIP1.83

WAR.3

Pitching

Standard and advanced, by season.

																				Trend
2015	COL/PHI	15	0	13.2	1	1	0	22	11	6	3	7.24	3.13	1.83	4.0	2.0	183	79	0.3	—

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	29	26	12	0	2	1	.462	.517	.577	.480	3.4%
vs RHB	36	32	10	0	1	5	.313	.314	.406	.306	13.9%

Pitch sequencing

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

ShowBatter

Four-seamCurveballChangeup

Select a count to see exactly what Ken Roberts throws in it.

Pitch arsenal

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


Four-Seam Fastball	63.8%	150	88.5	1,816	41.3%	12.9%	28	.357	.871
Curveball	23.8%	56	76.9	1,082	42.9%	16.1%	19	.421	.955
Changeup	11.9%	28	81.8	1,010	35.7%	22.2%	11	—	—

Ken Roberts'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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Ken Roberts

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.