Jackson Kowar

Seattle MarinersMLB

ID: 663804

Outings

282

Total Pitches

Strikeouts

Walks

2.14

K/BB

Proprietary Metrics

15 games • 282 pitches

85Tunnel ScoreRelease point similarity 87SeparationMovement divergence 17Extension ScoreFastball extension & velo jump

What do these metrics mean?

Tunnel Score (0-100): Measures how similar a pitcher's pitches look coming out of the hand before they diverge. Higher scores indicate better deception—the ball looks the same to the batter regardless of pitch type until it's too late.

Separation Score (0-100): Measures how much the pitches diverge at the plate based on horizontal and vertical movement. Higher separation means more contrast between pitch types, making the arsenal harder to square up.

Extension Score (0-100): Measures fastball extension and perceived velocity jump. Higher scores indicate better release extension and effective speed vs release speed, making the fastball appear faster to batters.

Arsenal Over Time

Velocity Over Time

Spin Rate Over Time

All Outings (54)

Date▲▼	Opp▲▼	Pitches▲▼	Velo▲▼	K▲▼	BB▲▼	SwStr%▲▼	Tunnel▲▼	Sep▲▼	Pair▲▼
2025-08-18	PHI	30	91.0(98.8)	1	2	16.7%	87	88	FF/SL
2025-08-17	NYM	18	89.7(98.5)	2	1	16.7%	63	93	FF/SL
2025-08-15	NYM	9	93.1(99.0)	1	0	33.3%	-	-	-
2025-08-14	BAL	10	95.6(99.0)	1	0	0.0%	78	-	-
2025-08-07	CWS	11	94.9(99.0)	0	0	9.1%	84	82	FF/SL
2025-08-05	CWS	20	91.4(98.4)	1	0	25.0%	88	82	FF/SL
2025-07-29	ATH	16	94.3(98.8)	1	0	6.3%	88	94	FF/SL
2025-07-27	LAA	17	93.3(99.0)	0	1	0.0%	92	78	FF/SL
2025-06-14	CLE	11	91.9(97.1)	1	0	18.2%	84	95	FF/SL
2025-06-10	AZ	28	92.5(98.1)	3	0	10.7%	90	71	FF/SL
2025-06-07	LAA	34	93.9(97.8)	1	3	5.9%	90	65	FF/SL
2025-06-06	LAA	17	91.3(97.1)	1	0	5.9%	84	93	FF/SL
2025-06-03	BAL	26	93.7(98.3)	1	0	7.7%	84	94	FF/SL
2025-05-31	MIN	19	95.3(99.4)	0	0	15.8%	86	99	FF/SL
2025-05-28	WSH	16	92.5(98.5)	1	0	6.3%	88	100	FF/SL
2023-09-27	DET	46	89.1(97.2)	1	2	10.9%	90	69	CH/SL
2023-09-26	DET	17	91.6(97.3)	0	1	5.9%	88	69	FF/SL
2023-09-22	HOU	18	90.6(98.5)	0	1	0.0%	87	74	FF/SL
2023-09-18	CLE	15	90.4(98.2)	2	0	13.3%	87	60	CH/SL
2023-09-17	HOU	11	89.6(97.4)	1	0	18.2%	79	55	CH/FF
2023-09-12	CWS	23	89.8(96.6)	2	1	21.7%	87	70	FF/SL
2023-09-10	TOR	17	93.2(99.4)	0	0	5.9%	85	47	CH/FF
2023-09-05	CWS	12	90.8(97.7)	1	0	0.0%	81	61	FF/SL
2023-09-02	BOS	37	91.5(98.2)	2	1	10.8%	89	63	FF/SL
2023-08-30	PIT	10	90.3(97.9)	1	0	20.0%	93	70	CH/SL
2023-08-28	PIT	16	90.4(98.1)	1	0	25.0%	86	60	FF/SL
2023-08-26	SEA	44	89.1(97.9)	1	3	2.3%	85	68	CH/SL
2023-08-23	ATH	21	91.9(98.8)	0	3	9.5%	86	71	FF/SL
2023-08-19	CHC	10	90.3(98.2)	0	0	10.0%	85	37	CH/FF
2023-08-17	SEA	35	88.9(98.1)	3	1	11.4%	88	61	CH/SL
2023-06-23	TB	28	88.6(97.7)	2	0	10.7%	89	73	CH/SL
2023-06-21	DET	31	89.0(98.4)	1	0	19.4%	90	77	FF/SL
2023-06-17	LAA	24	90.1(97.5)	1	1	16.7%	90	68	FF/SL
2023-06-13	CIN	20	92.4(98.4)	1	1	10.0%	89	71	FF/SL
2023-06-11	BAL	28	90.4(98.3)	1	1	7.1%	90	70	FF/SL
2023-06-06	MIA	44	91.6(98.8)	3	2	11.4%	91	73	FF/SL
2023-06-03	COL	23	90.2(98.7)	2	0	8.7%	88	70	FF/SL
2023-05-19	CWS	38	91.7(98.4)	3	2	7.9%	91	71	FF/SL
2022-07-29	NYY	18	90.2(98.7)	0	2	5.6%	85	63	CH/FF
2022-07-14	TOR	27	88.7(98.7)	2	0	18.5%	89	84	FF/SL
2022-07-09	CLE	60	90.8(98.3)	3	3	8.3%	87	55	CH/FF
2022-07-05	HOU	58	90.5(97.6)	3	2	8.6%	85	64	CH/FF
2022-07-03	DET	15	91.6(97.2)	0	0	6.7%	85	67	CH/FF
2022-06-27	TEX	62	89.7(98.0)	5	3	16.1%	91	80	CH/FF
2022-04-10	CLE	71	89.6(97.0)	4	1	7.0%	93	74	FF/SL
2021-10-03	MIN	75	90.3(97.8)	6	1	14.7%	91	73	FF/SL
2021-09-27	CLE	84	90.9(96.9)	4	1	9.5%	89	79	FF/SL
2021-09-19	SEA	96	90.6(97.0)	3	3	5.2%	86	67	FF/SL
2021-09-14	ATH	39	92.3(97.3)	1	4	7.7%	88	77	FF/SL
2021-09-07	BAL	105	90.1(97.7)	7	3	15.2%	92	82	FF/SL
2021-09-01	CLE	94	91.6(98.0)	6	3	13.8%	88	70	FF/SL
2021-06-19	BOS	42	91.2(98.1)	1	0	9.5%	71	47	CH/FF
2021-06-12	ATH	57	91.8(97.3)	1	3	0.0%	82	86	CU/FF
2021-06-07	LAA	39	90.5(97.3)	0	2	7.7%	88	58	CH/FF