Players · B · Pitcher · 2017 regular season

Mike Bolsinger

Age: 29
B/T: R/R
Height: 6' 1"
Weight: 215 lb
Number: #46

Born: January 29, 1988 in McKinney, TX, United States
MLB debut: April 14, 2014

dbWAR: .4
IP: 41.1
ERA: 6.31
FIP: 6.28
K/9: 8.5
FIP−: 144

Mike Bolsinger was a relief pitcher for the Toronto Blue Jays. In 2017 he struck out 39 batters over 41.1 innings across 11 appearances, going 0-3. His ERA of 6.31 was 44.9% higher than the league average of 4.36 — 14th of 17 on his team, and 472nd of 527 among MLB pitchers with 20+ innings. Stripping out defence, his 6.28 FIP suggests the ERA was no fluke. He missed bats on 20.4% of swings (8.6% of every pitch he threw), walked 13.8% of the batters he faced and struck out 19.9%. His -0.6 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 regular season.

FIP6.28

K/98.5

WHIP1.81

WAR-.6

WAR by season

Pitching Regular season

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


2017	TOR	11	5	41.1	0	3	48	29	39	27	6.31	6.28	1.81	8.5	5.9	145	144	-0.6
2016	LAD	6	6	27.2	1	4	33	21	25	9	6.83	5.82	1.52	8.1	2.9	163	139	-0.2
2015	LAD	21	21	109.1	6	6	104	44	98	45	3.62	3.91	1.36	8.1	3.7	91	99	1.3
2014	AZ	10	9	52.1	1	6	66	32	48	17	5.50	4.01	1.59	8.3	2.9	147	107	0.5

Batting Regular season

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


2016	LAD	5	9	0	0	7	.000	.000	.000	.000	.000	0.0%	77.8%	.000	-2.3	-124	-0.1
2015	LAD	21	40	1	0	23	.026	.026	.053	.026	.067	0.0%	57.5%	.034	-9.0	-102	-0.4
2014	AZ	10	20	2	1	7	.105	.105	.105	.000	.167	0.0%	35.0%	.094	-3.3	-52	-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	86	72	12	2	12	22	.167	.291	.292	.269	25.6%
vs RHB	110	89	36	7	15	17	.404	.482	.730	.496	15.5%

Pitch sequencing

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

ShowBatter

CutterCurveballSliderFour-seamChangeup

Select a count to see exactly what Mike Bolsinger throws in it.

Pitch arsenal

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

Season


Cutter	34.7%	263	88.7	2,118	46.0%	14.7%	44	.409	1.323
Curveball	33.0%	250	79.8	2,399	46.4%	15.9%	56	.286	.818
Slider	15.6%	118	80.9	2,491	50.8%	35.1%	41	.195	.564
Four-Seam Fastball	13.6%	103	90.0	2,108	40.8%	17.1%	19	.316	1.096
Changeup	2.8%	21	82.7	1,573	28.6%	25.0%	1	—	—

Mike Bolsinger'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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Mike Bolsinger

Similar players

Nearest 2017 seasons by command, run prevention and role, on rate statistics rather than totals.

Braden ShipleyAZ

ERA: 5.76
FIP: 6.24
SO: 18
WAR: -0.3

Derek HollandCWS

ERA: 6.20
FIP: 6.45
SO: 104
WAR: -1.7

Lisalverto BonillaCIN

ERA: 8.10
FIP: 6.43
SO: 28
WAR: -0.5

Tom KoehlerTOR

ERA: 6.69
FIP: 6.05
SO: 62
WAR: -0.8

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.