Players · R · Pitcher · 2014 regular season

B.J. Rosenberg

Philadelphia Phillies National League East

Age: 29
B/T: R/R
Height: 6' 3"
Weight: 220 lb
Number: #53

Born: September 17, 1985 in Newport News, VA, United States
MLB debut: June 9, 2012

dbWAR: -.4
IP: 12.0
ERA: 6.75
FIP: 8.80
K/9: 6.8
FIP−: 235

B.J. Rosenberg was a relief pitcher for the Philadelphia Phillies. In 2014 he struck out 9 batters over 12.0 innings across 13 appearances, going 1-0. His ERA of 6.75 was 80.4% higher than the league average of 3.74. Stripping out defence, his 8.80 FIP suggests that his ERA had some help behind him. He missed bats on 21.1% of swings (9.4% of every pitch he threw), walked 11.9% of the batters he faced and struck out 15.3%. His -0.7 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, 2014 regular season.

FIP8.80

K/96.8

WHIP2.25

WAR-.7

WAR by season

Pitching Regular season

Standard and advanced, by season. Regular-season games only.


2014	PHI	13	0	12.0	1	0	0	20	9	9	7	6.75	8.80	2.25	6.8	5.3	180	235	-0.7
2013	PHI	22	0	19.2	2	0	1	20	10	19	9	4.58	2.49	1.47	8.7	4.1	118	64	0.5
2012	PHI	22	1	25.0	1	2	0	18	17	24	14	6.12	5.17	1.28	8.6	5.0	152	129	-0.2

Batting Regular season

Standard and advanced, by season. Regular-season games only.

																					Trend
2012	PHI	2	4	1	0	1	0	0	1	.333	.333	.333	.000	.500	0.0%	25.0%	.295	-0.1	85	0.0	—

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2014. 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	20	14	5	2	6	4	.357	.550	.786	.563	20.0%
vs RHB	39	38	15	3	1	5	.395	.410	.737	.503	12.8%

Pitch sequencing

What B.J. Rosenberg throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

Four-seamSliderSinkerCurveballChangeup

Select a count to see exactly what B.J. Rosenberg throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	43.0%	110	93.0	2,182	41.8%	16.4%	28	.464	1.317
Slider	26.6%	68	84.7	574	48.5%	28.1%	17	.294	1.000
Sinker	19.1%	49	91.7	2,311	30.6%	11.8%	4	—	—
Curveball	8.2%	21	77.4	1,308	52.4%	42.9%	1	—	—

B.J. Rosenberg'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.

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B.J. Rosenberg

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.