P | Seattle Mariners
Bats/Throws: R/R | 6' 5" 200 lbs | Age: 29
Draft: 2018 | Rd. 1C, No. 33, Kansas City Royals | Florida
W L ERA G GS SV IP SO WHIP
2022 0 0 9.77 7 0 0 15.2 17 2.43
2023 2 0 6.43 23 0 0 28 29 1.93
2025 2 0 4.24 15 0 0 17 15 1.24
4 Seasons 4 6 8.21 54 8 0 91 90 1.93
G W-L ERA IP SO WHIP
2022 7 0-0 9.77 15.2 17 2.43
2023 23 2-0 6.43 28 29 1.93
2025 15 2-0 4.24 17 15 1.24
4 Seasons 54 4-6 8.21 91 90 1.93
MLB Percentile Rankings
Movement Profile (Induced Break)
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Statcast Statistics

Season Age Pitches Batted
Balls
Barrels Barrel % Barrel/PA Exit
Velocity
Max EV Launch
Angle
LA Sweet-
Spot %
XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2021 24 631 103 12 11.7 7.8 92.8 116.6 14.6 42.7 .299 .520 .422 .396 .444 52.4 18.8 13.0 11.28 7.21
2022 25 311 54 4 7.4 4.9 87.5 110.4 9.5 31.5 .298 .473 .482 .380 .437 48.1 20.7 13.4 9.77 6.37
2023 26 568 87 5 5.7 3.6 87.9 113.8 13.1 34.5 .248 .364 .377 .329 .350 34.5 21.2 14.6 6.43 4.61
2025 28 281 48 5 10.4 7.0 91.8 110.9 24.7 22.9 .238 .483 .328 .349 .400 50.0 21.1 9.9 4.24 5.24
Player 1791 292 26 8.9 5.9 90.2 116.6 14.9 34.9 .273 .457 .404 .365 .407 45.9 20.3 13.1
MLB 7.2 4.9 88.6 122.9 12.4 33.3 .245 .404 .315 .315 .368 37.0 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Kowar relies on 4 pitches.
Four Seamer
(57.7%) ,
Slider
(35.6%) ,
Changeup
(5.3%) ,
Sinker
(1.4%) ,


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Pitch Tracking



Batted Ball Profile

AIR: Fly Balls + Line Drives + Popups All Batted Balls Batted Ball Breakdown
Season GB % AIR % FB % LD % PU % Pull % Straight % Oppo % Pull GB % Straight GB % Oppo GB % Pull AIR % Straight AIR % Oppo AIR %
2021 35.0 65.0 29.1 32.0 3.9 34.0 40.8 25.2 14.6 18.4 1.9 19.4 22.3 23.3
2022 50.0 50.0 20.4 24.1 5.6 46.3 29.6 24.1 27.8 18.5 3.7 18.5 11.1 20.4
2023 44.8 55.2 23.0 27.6 4.6 42.5 31.0 26.4 23.0 19.5 2.3 19.5 11.5 24.1
2025 35.4 64.6 43.8 8.3 12.5 33.3 33.3 33.3 22.9 10.4 2.1 10.4 22.9 31.3
Player 40.8 59.2 28.1 25.3 5.8 38.7 34.6 26.7 20.9 17.5 2.4 17.8 17.1 24.3
MLB 44.2 55.8 24.0 24.7 7.1 37.4 37.4 25.1 20.6 17.6 5.9 16.7 19.7 19.3
! Note: All figures in this table cover the period 2015-present.

Quality of Contact

Season Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2021 1.0 25.2 26.2 28.2 7.8 11.7 7.8
2022 5.6 33.3 14.8 33.3 5.6 7.4 4.9
2023 4.6 33.3 28.7 25.3 2.3 5.7 3.6
2025 0.0 20.8 35.4 25.0 8.3 10.4 7.0
Player 2.7 28.4 26.4 27.7 5.8 8.9 5.9
MLB 4.0 32.4 24.9 24.4 5.9 7.2 4.9
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: This section shows two different ways to evaluate pitch movement. On the left, “Total Movement” shows the real-world movement of a pitch, including the forces of gravity, which affects every pitch thrown. Since gravity requires time, and slower pitches aren't 'better' just because they have more time to move, a pitch's movement is compared to other pitches of the same pitch type, within +/- 2 MPH and +/- 0.5 feet of extension/release. On the right, Induced Movement (or IVB) is reported without gravity, and attempts to isolate movement created by the pitcher's ability to spin and manipulate the ball.
Total Movement (in inches, w/ gravity)Induced Movement (in inches, w/o gravity)
YearPitchTeamHand#MPHVertical
Drop
vs.
Comparable
Horizontal
Break
vs.
Comparable
Vertical
Break
vs. AvgHorizontal
Break
vs. Avg
2025 Slider SEA R 100 86.2 39.1 4.0 2.8GLV -1.4 -2.3 4.0 2.8GLV -1.8
2025 Sinker SEA R 4 96.4 14.7 -6.3 15.9ARM 0.7 14.9 -7.5 15.9ARM 0.8
2025 4-Seam Fastball SEA R 162 97.3 13.7 -0.4 11.1ARM 3.4 15.2 -0.6 11.1ARM 3.5
2025 Changeup SEA R 15 87.0 32.8 1.6 16.2ARM 1.9 3.3 0.8 16.2ARM 1.8
2023 4-Seam Fastball KC R 216 96.9 14.5 -0.9 10.9ARM 2.7 14.6 -1.2 10.9ARM 3.5
2023 Sinker KC R 1 95.9 15.8 -5.3 19.2ARM 3.8 14.6 -6.9 19.2ARM 4.3
2023 Changeup KC R 202 86.6 32.9 2.4 16.5ARM 2.2 3.5 1.9 16.5ARM 2.1
2023 Slider KC R 149 86.0 38.0 2.7 2.0GLV -2.7 -1.1 2.7 2.0GLV -3.0
! Note: Years are in reverse order.

Run Values by Pitch Type

Year Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2025 4-Seam Fastball 1.3 2 162 57.7 45 .238 .476 .328 12.8 13.3 15.0 .272 .561 .375 55.6
2025 Slider -1.2 -1 100 35.6 23 .158 .316 .287 52.3 39.1 24.3 .153 .321 .288 30.0
2025 Changeup -7.0 -1 15 5.3 3 .500 1.000 .650 0.0 0.0 0.0 .336 .366 .436 50.0
2025 Sinker 3.2 0 4 1.4 -- -- -- 0.0 -- -- -- -- -- --
2023 4-Seam Fastball -0.8 -2 216 38.0 49 .250 .389 .406 21.8 24.5 23.5 .225 .325 .360 41.7
2023 Changeup -1.3 -3 202 35.6 50 .364 .455 .400 25.5 16.0 10.5 .315 .385 .352 25.0
2023 Slider -2.4 -4 149 26.2 37 .250 .528 .361 32.4 24.3 22.5 .189 .376 .248 40.7
2023 Sinker -16.4 0 1 0.2 1 -- -- .700 -- 0.0 -- -- -- .700 --
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2025 Changeup 15 87.0 84 17.1 2:45 2:45 0
2025 4-Seam Fastball 156 97.3 97 18.6 1:30 1:15 15
2025 Slider 87 86.2 30 5.3 8:15 7:15 60
2023 Changeup 200 86.6 86 17.6 2:45 2:45 0
2023 4-Seam Fastball 212 96.9 98 18.1 1:15 1:15 0
2023 Slider 148 86.0 26 4.1 8:15 7:30 45
! Note: Years are in reverse order.
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! Note: This table is showing data from the PITCHER perspective.
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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
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Statcast Pitching Run Value

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2021 154 631 -6 4 -7 -5 -14
2022 82 311 -3 -6 -3 0 -12
2023 137 568 -2 2 -4 -3 -8
2025 71 281 2 2 -2 -2 0
Player 444 1,791 -10 1 -16 -10 -34
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Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2021 631 46.4 68.6 83.1 20.4 53.6 35.2 53.2 42.8 24.4 7.6 83.3
2022 311 46.9 61.6 90.0 31.5 46.2 39.9 52.4 45.7 26.1 6.8 76.2
2023 568 45.4 65.5 84.6 26.5 51.2 39.8 59.9 44.2 26.3 6.9 89.7
2025 281 43.4 74.6 89.0 27.7 45.5 39.9 54.9 48.0 25.2 6.8 89.5
Player 1,791 45.7 67.3 85.7 25.4 49.8 38.2 55.4 44.6 25.4 7.1 85.0
MLB 48.9 67.0 82.5 28.4 58.0 42.7 61.1 47.3 25.0 7.3 76.3
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year xwOBA /
xERA
xBA xSLG xISO xOBP Brl Brl% EV Hard
Hit%
K% BB% Whiff% Chase
Rate
FB
Velo
FB
Spin
CB
Spin
Extension
2021 82 41 28
2022 81 59 44
2023 91 6 31
2025 90 21 26
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Expected Home Runs

Adjusted

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2021 22.99 7 6.7 0 4 6 3 42.9
2022 24.77 4 3.6 0 3 3 1 25.0
2023 24.74 4 3.5 1 1 2 2 50.0
2025 24.81 4 3.5 1 0 2 2 50.0
Player 24.11 19 17.2 2 8 13 8 42.1
Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Expected Home Runs by Park

Adjusted

Year HR
2021 7 8 5 6 6 6 7 8 4 5 6 7 7 5 6 7 5 7 8 7 8 8 9 10 7 5 7 8 8 6 6
2022 4 3 3 5 4 4 4 3 3 2 2 5 5 3 4 5 3 4 3 4 3 4 5 4 3 2 5 4 4 2 2
2023 4 3 3 3 4 4 4 3 4 2 4 4 3 2 4 4 3 3 4 4 2 5 4 4 2 3 4 4 4 4 3
2025 4 3 2 4 4 3 4 4 4 3 4 4 3 4 4 4 4 3 3 4 3 2 4 4 3 3 4 4 3 3 3
Player 19 17 13 18 18 17 19 18 15 12 16 20 18 14 18 20 15 17 18 19 16 19 22 22 15 13 20 20 19 15 14
Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Year to Year Changes

2023 +/-   2022 +/-   2021
Results
BA .293 -.087 .380 +.044 .336
xBA .248 -.050 .298 -.001 .299
OBP .401 -.062 .463 +.041 .422
xOBP .363 -.030 .393 -.006 .399
SLG .457 -.219 .676 +.090 .586
xSLG .364 -.109 .473 -.047 .520
ISO .164 -.132 .296 +.046 .250
xISO .116 -.059 .175 -.046 .221
BABIP .361 -.099 .460 +.085 .375
wOBA .377 -.105 .482 +.060 .422
xwOBA .329 -.051 .380 -.016 .396
wOBACON .426 -.165 .591 +.109 .482
xwOBACON .350 -.087 .437 -.007 .444
BACON .391 -.109 .500 +.083 .417
xBACON .331 -.061 .392 +.010 .382
Statcast Hit Metrics
Hard Hit % 34.5 -13.6 48.1 -4.3 52.4
Avg Exit Velocity 87.9 +0.4 87.5 -5.3 92.8
Launch Angle Sweet-Spot % 34.5 +3.0 31.5 -11.2 42.7
Barrel % 5.7 -1.7 7.4 -4.3 11.7
Avg Launch Angle 13.1 +3.6 9.5 -5.1 14.6
Statcast Bat Tracking
Bat Speed 71.2 -- -- -- --
Attack Angle -- -- -- --
Ideal Attack Angle % 48.3 -- -- -- --
Attack Direction -3° -- -- -- --
Swing Path - Tilt 33° -- -- -- --
Swing Length 7.5 -- -- -- --
Statcast Pitch Metrics
Fastball Velocity 96.9 +1.1 95.8 +0.2 95.6
Breaking Velocity 86.0 +3.1 82.9 +0.3 82.6
Offspeed Velocity 86.6 +0.9 85.7 -0.5 86.2
Batted Ball Results
Barrels 5 +1 4 -8 12
Popup % 4.6 -1.0 5.6 +1.7 3.9
Flyball % 23.0 +2.6 20.4 -8.7 29.1
Line Drive % 27.6 +3.5 24.1 -7.9 32.0
Groundball % 44.8 -5.2 50.0 +15.0 35.0
Pull % 42.5 -3.8 46.3 +12.3 34.0
Straight Away % 31.0 +1.4 29.6 -11.2 40.8
Opposite Field % 26.4 +2.3 24.1 -1.1 25.2
Weak Contact % 4.6 -1.0 5.6 +4.6 1.0
Pull Airball % 19.5 +1.0 18.5 -0.9 19.4
Topped Contact % 33.3 0.0 33.3 +8.1 25.2
Under Contact % 28.7 +13.9 14.8 -11.4 26.2
Flare/Burner Contact % 25.3 -8.0 33.3 +5.1 28.2
Solid Contact % 2.3 -3.3 5.6 -2.2 7.8
HR/FB % 20.0 -16.4 36.4 +13.1 23.3
Popups 4 +1 3 -1 4
Flyballs 20 +9 11 -19 30
Line Drives 24 +11 13 -20 33
Groundballs 39 +12 27 -9 36
Plate Discipline
In Zone % 45.4 -1.5 46.9 +0.5 46.4
Out of Zone % 54.6 +1.5 53.1 -0.5 53.6
Edge % 39.8 -0.1 39.9 +4.7 35.2
Zone Swing % 65.5 +3.9 61.6 -7.0 68.6
Out of Zone Swing % 26.5 -5.0 31.5 +11.1 20.4
In Zone Contact % 84.6 -5.4 90.0 +6.9 83.1
Out of Zone Contact % 51.2 +5.0 46.2 -7.4 53.6
Whiff % 26.3 +0.2 26.1 +1.7 24.4
First Strike % 59.9 +7.5 52.4 -0.8 53.2
First Pitch Swing % 32.1 +1.6 30.5 +7.8 22.7
Swing % 44.2 -1.5 45.7 +2.9 42.8
Meatball Swing % 89.7 +13.5 76.2 -7.1 83.3
Meatball % 6.9 +0.1 6.8 -0.8 7.6
Zone Swing & Miss % 15.4 +5.4 10.0 -6.9 16.9
Out of Zone Swing & Miss % 48.8 -5.0 53.8 +7.4 46.4
In Zone 258 +112 146 -147 293
Out of Zone 310 +145 165 -173 338
Edge 226 +102 124 -98 222
In Zone Swings 169 +79 90 -111 201
Out of Zone Swings 82 +30 52 -17 69
In Zone Swing & Misses 26 +17 9 -25 34
Out of Zone Swing & Misses 40 +12 28 -4 32
Basic
Pitches 568 +257 311 -320 631
PA 137 +55 82 -72 154
AB 116 +45 71 -57 128
Hits 34 +7 27 -16 43
Singles 23 +7 16 -9 25
Doubles 7 +2 5 -6 11
Triples 0 -2 2 +2 0
Home Runs 4 0 4 -3 7
Walks 20 +9 11 -9 20
Strikeouts 29 +12 17 -12 29
K% 21.2 +0.5 20.7 +1.9 18.8
BB% 14.6 +1.2 13.4 +0.4 13.0
HBP 1 +1 0 -2 2
Batted Balls 87 +33 54 -49 103
Number of Fastballs 217 +72 145 -204 349
Number of Offspeed 202 +69 133 -59 192
Number of Breaking 149 +116 33 -57 90
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 154 .422 86 17 19.8 68 41 60.3
2022 Shifts 82 .482 54 16 29.6 28 16 57.1
2023 Shades 137 .377 84 10 11.9 53 26 49.1
2025 Shades 66 .329 27 2 7.4 39 19 48.7
! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

Bases EmptyRunners On Base
SeasonTeamPitchesTempoFast %Slow %PitchesTempoFast %Slow %
2021 167 17.3 21.0% 1.8% 133 23.6 0.0% 11.3%
2022 82 16.4 23.2% 1.2% 63 18.7 6.3% 1.6%
2023 138 14.3 67.4% 0.0% 111 17.0 18.9% 0.9%
2025 74 15.6 39.2% 0.0% 38 17.9 2.6% 0.0%

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Pitch Distribution