Players · F · Pitcher · 2021

Seth Frankoff

Arizona Diamondbacks National League West

Age: 33
B/T: R/R
Height: 6' 5"
Weight: 206 lb
Number: #61

Born: August 27, 1988 in Raleigh, NC, United States
MLB debut: June 9, 2017

dbWAR: -.4
IP: 14.2
ERA: 9.20
FIP: 7.47
K/9: 6.8
FIP−: 175

Seth Frankoff was a starting pitcher for the Arizona Diamondbacks. In 2021 he struck out 11 batters over 14.2 innings across 4 appearances, 3 of them starts, going 0-2. His ERA of 9.20 was 115.8% higher than the league average of 4.27. Stripping out defence, his 7.47 FIP suggests he pitched better than his ERA shows. He missed bats on 17.9% of swings (8.5% of every pitch he threw), walked 12.2% of the batters he faced and struck out 14.9%. His -0.4 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, 2021.

FIP7.47

K/96.8

WHIP1.98

WAR-.4

WAR by season

Pitching

Standard and advanced, by season.


2021	AZ	4	3	14.2	2	20	15	11	9	9.20	7.47	1.98	6.8	5.5	216	175	-0.4
2020	SEA	2	0	2.2	0	6	5	0	2	16.88	5.44	3.00	0.0	6.8	379	122	-0.0
2017	CHC	1	0	2.0	1	4	2	2	0	9.00	7.66	2.00	9.0	0.0	207	176	-0.1

Batting

Standard and advanced, by season.

																					Trend
2021	AZ	3	4	0	0	0	0	1	2	.000	.250	.000	.000	.000	25.0%	50.0%	.181	-0.5	6	0.0	—

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2021. 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	28	24	8	2	3	4	.333	.429	.583	.434	14.3%
vs RHB	46	36	12	2	6	7	.333	.442	.583	.441	15.2%

Spray chart

Where every ball he put in play landed, 2021.

Loading 1 batted balls…

Hot and cold zones

Batting average by pitch location, 2021.

Below averageLeague averageAbove average

Batting average by location of the pitch that ended each plate appearance, catcher's view. The bordered square is the strike zone; the outer band is chase territory. Cells with fewer than 8 at-bats are left grey rather than shown as signal. League average on the same attribution is .243.

Pitch sequencing

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

ShowBatter

Four-seamSliderChangeupCurveball

Select a count to see exactly what Seth Frankoff throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	39.6%	103	91.3	2,411	37.9%	6.4%	23	.391	1.256
Slider	30.4%	79	87.7	2,543	40.5%	23.9%	23	.304	.838
Changeup	18.5%	48	84.5	2,152	47.9%	22.7%	7	—	—
Curveball	11.5%	30	78.3	2,467	26.7%	37.5%	7	—	—

Seth Frankoff'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

Put Seth Frankoff beside up to three others.

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Seth Frankoff

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.