Zack Gelof

Zack Gelof

Athletics (AAA)

2B

Age: 25

Bats/Throws: R/R

6'2" / 205

DOB: 10/19/1999

(25 years, 9 months, 24 days)

2B

Pitch Type Splits

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	AB	PA	H H - Hits Allowed	1B	2B L - Losses	3B ERA - Earned Run Average ((ER*9)/IP)	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	SO SO - Strikeouts	HBP HBP - Hit Batters	SF	SH	GDP	AVG AVG - Batting Average Against	divider	minVel	maxVel	Vel
2023	Slider (SL)	263		62	63	16	4	9	0	3	1	0	20	0	0	0	3	.258		72.6	93.3	84.3
2024	Slider (SL)	552		134	142	27	18	2	0	7	7	0	53	0	1	0	3	.201		73.3	92.6	84.9
2025	Slider (SL)	20		4	4	0	0	0	0	0	0	0	4	0	0	0	0	.000		81.1	89.3	85.7
Total	Slider (SL)	835		200	209	43	22	11	0	10	8	0	77	0	1	0	6	.215		72.6	93.3	84.7

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	AB	PA	H H - Hits Allowed	1B	2B L - Losses	3B ERA - Earned Run Average ((ER*9)/IP)	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	SO SO - Strikeouts	HBP HBP - Hit Batters	SF	SH	GDP	AVG AVG - Batting Average Against	divider	minVel	maxVel	Vel
2023	Slider (SL)	263		62	63	16	4	9	0	3	1	0	20	0	0	0	3	.258		72.6	93.3	84.3
2024	Slider (SL)	552		134	142	27	18	2	0	7	7	0	53	0	1	0	3	.201		73.3	92.6	84.9
2025	Slider (SL)	20		4	4	0	0	0	0	0	0	0	4	0	0	0	0	.000		81.1	89.3	85.7
Total	Slider (SL)	835		200	209	43	22	11	0	10	8	0	77	0	1	0	6	.215		72.6	93.3	84.7

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	BB% BB% - Walk Percentage (BB/TBF)	K% K% - Strikeout Percentage (SO/TBF)	BB/K	AVG AVG - Batting Average Against	OBP	SLG	OPS	ISO	BABIP BABIP - Batting Average on Balls in Play	wRC	wRAA	wOBA	wRC+
2023	Slider (SL)	263		1.6%	31.7%	0.05	.258	.270	.548	.818	.290	.333	8.8	1.1	.340	132
2024	Slider (SL)	552		4.9%	37.3%	0.13	.201	.239	.373	.613	.172	.267	11.4	-5.2	.264	83
2025	Slider (SL)	20		0.0%	100.0%	0.00	.000	.000	.000	.000	.000	.000	-0.5	-1.0	.000	-100
Total	Slider (SL)	835		3.8%	36.8%	0.10	.215	.244	.420	.664	.205	.289	19.6	-5.2	.282	94

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	BB% BB% - Walk Percentage (BB/TBF)	K% K% - Strikeout Percentage (SO/TBF)	BB/K	AVG AVG - Batting Average Against	OBP	SLG	OPS	ISO	BABIP BABIP - Batting Average on Balls in Play	wRC	wRAA	wOBA	wRC+
2023	Slider (SL)	263		1.6%	31.7%	0.05	.258	.270	.548	.818	.290	.333	8.8	1.1	.340	132
2024	Slider (SL)	552		4.9%	37.3%	0.13	.201	.239	.373	.613	.172	.267	11.4	-5.2	.264	83
2025	Slider (SL)	20		0.0%	100.0%	0.00	.000	.000	.000	.000	.000	.000	-0.5	-1.0	.000	-100
Total	Slider (SL)	835		3.8%	36.8%	0.10	.215	.244	.420	.664	.205	.289	19.6	-5.2	.282	94

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	LD% LD% - Line Drive Percentage (LD/BIP)	GB% GB% - Ground Ball Percentage (GB/BIP)	FB% FB% - Fly Ball Percentage (FB/BIP)	IFFB% IFFB% - Infield Fly Ball Percentage (IFFB/FB)	HR/FB HR/FB - Home Run to Fly Ball Ratio	Strikes Strikes - Strikes Thrown	Balls Balls - Balls Thrown	Pitches Pitches - Pitches Thrown	divider	xMov	zMov	Mov
2023	Slider (SL)	263		26.2%	33.3%	40.5%	17.6%	17.6%	157	106	263		3.2	-0.2	5.5
2024	Slider (SL)	552		18.3%	42.7%	39.0%	6.3%	21.9%	353	199	552		3.5	-0.1	5.4
2025	Slider (SL)	20		0.0%	0.0%	0.0%	0.0%	0.0%	13	7	20		2.9	-0.1	3.9
Total	Slider (SL)	835		21.0%	39.5%	39.5%	10.2%	20.4%	523	312	835		3.4	-0.1	5.4

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	LD% LD% - Line Drive Percentage (LD/BIP)	GB% GB% - Ground Ball Percentage (GB/BIP)	FB% FB% - Fly Ball Percentage (FB/BIP)	IFFB% IFFB% - Infield Fly Ball Percentage (IFFB/FB)	HR/FB HR/FB - Home Run to Fly Ball Ratio	Strikes Strikes - Strikes Thrown	Balls Balls - Balls Thrown	Pitches Pitches - Pitches Thrown	divider	xMov	zMov	Mov
2023	Slider (SL)	263		26.2%	33.3%	40.5%	17.6%	17.6%	157	106	263		3.2	-0.2	5.5
2024	Slider (SL)	552		18.3%	42.7%	39.0%	6.3%	21.9%	353	199	552		3.5	-0.1	5.4
2025	Slider (SL)	20		0.0%	0.0%	0.0%	0.0%	0.0%	13	7	20		2.9	-0.1	3.9
Total	Slider (SL)	835		21.0%	39.5%	39.5%	10.2%	20.4%	523	312	835		3.4	-0.1	5.4

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	O-Swing% O-Swing% - Percentage of pitches a batter swings at outside the strike zone	Z-Swing% Z-Swing% - Percentage of pitches a batter swings at inside the strike zone.	Swing% Swing% - Total percentage of pitches a batter swings at	O-Contact% O-Contact% - Percentage of times a batter makes contact with the ball when swinging at pitches thrown outside the strike zone	Z-Contact% Z-Contact% - Percentage of times a batter makes contact with the ball when swinging at pitches thrown inside the strike zone	Contact% Contact% - Total percentage of contact made when swinging at all pitches	Zone% Zone% - Percentage of pitches seen inside the strike zone	SwStr% SwStr% - Percentage of Strikes that were swung at and missed	divider	pVAL	pVAL/C
2023	Slider (SL)	263		25.2%	75.0%	48.7%	42.9%	65.6%	59.4%	47.1%	19.8%		-1.6	-0.6
2024	Slider (SL)	552		32.9%	73.0%	52.0%	32.6%	79.2%	63.8%	47.6%	18.8%		3.2	0.6
2025	Slider (SL)	20		36.4%	66.7%	50.0%	0.0%	50.0%	30.0%	45.0%	35.0%		0.9	4.3
Total	Slider (SL)	835		30.5%	73.5%	50.9%	34.3%	74.2%	61.6%	47.4%	19.5%		2.5	0.3

Season	Pitch	Pitches Pitches - Pitches Thrown	divider	O-Swing% O-Swing% - Percentage of pitches a batter swings at outside the strike zone	Z-Swing% Z-Swing% - Percentage of pitches a batter swings at inside the strike zone.	Swing% Swing% - Total percentage of pitches a batter swings at	O-Contact% O-Contact% - Percentage of times a batter makes contact with the ball when swinging at pitches thrown outside the strike zone	Z-Contact% Z-Contact% - Percentage of times a batter makes contact with the ball when swinging at pitches thrown inside the strike zone	Contact% Contact% - Total percentage of contact made when swinging at all pitches	Zone% Zone% - Percentage of pitches seen inside the strike zone	SwStr% SwStr% - Percentage of Strikes that were swung at and missed	divider	pVAL	pVAL/C
2023	Slider (SL)	263		25.2%	75.0%	48.7%	42.9%	65.6%	59.4%	47.1%	19.8%		-1.6	-0.6
2024	Slider (SL)	552		32.9%	73.0%	52.0%	32.6%	79.2%	63.8%	47.6%	18.8%		3.2	0.6
2025	Slider (SL)	20		36.4%	66.7%	50.0%	0.0%	50.0%	30.0%	45.0%	35.0%		0.9	4.3
Total	Slider (SL)	835		30.5%	73.5%	50.9%	34.3%	74.2%	61.6%	47.4%	19.5%		2.5	0.3