P | Seattle Mariners
Bats/Throws: L/L | 6' 2" 190 lbs | Age: 28
Draft: 2019 | Rd. 32, No. 951, Miami Marlins | Columbia
W L ERA G GS SV IP SO WHIP
2025 4 2 7.34 31 0 0 30.2 36 1.83
2026 0 0 4.05 7 0 0 6.2 9 1.50
2 Seasons 4 2 6.75 38 0 0 37.1 45 1.77
G W-L ERA IP SO WHIP
2025 31 4-2 7.34 30.2 36 1.83
2026 7 0-0 4.05 6.2 9 1.50
2 Seasons 38 4-2 6.75 37.1 45 1.77
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
2025 27 613 89 6 6.7 4.0 90.1 114.2 4.9 29.2 .240 .383 .367 .333 .374 44.9 23.8 14.6 7.34 4.67
2026 28 120 19 2 10.5 6.5 90.6 112.9 30.0 36.8 .200 .447 .385 .314 .400 36.8 29.0 6.5 4.05 4.14
Player 733 108 8 7.4 4.4 90.2 114.2 9.3 30.6 .233 .395 .370 .330 .379 43.5 24.7 13.2
MLB 7.6 4.9 88.6 122.9 12.5 33.3 .243 .407 .315 .316 .369 37.1 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Simpson relies on 5 pitches.
Sinker
(36.7%) ,
Curveball
(29.2%) ,
Sweeper
(25.8%) ,
Four Seamer
(5.0%) ,
Changeup
(3.3%) ,


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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 %
2025 53.9 46.1 18.0 25.8 2.2 42.7 38.2 19.1 31.5 14.6 7.9 11.2 23.6 11.2
2026 26.3 73.7 42.1 15.8 15.8 42.1 36.8 21.1 5.3 5.3 15.8 36.8 31.6 5.3
Player 49.1 50.9 22.2 24.1 4.6 42.6 38.0 19.4 26.9 13.0 9.3 15.7 25.0 10.2
MLB 44.1 55.9 24.2 24.6 7.1 37.5 37.3 25.1 20.7 17.5 5.8 16.8 19.7 19.2
! Note: All figures in this table cover the period 2015-present.

Quality of Contact

Season Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2025 6.7 43.8 12.4 23.6 6.7 6.7 4.0
2026 0.0 26.3 47.4 10.5 5.3 10.5 6.5
Player 5.6 40.7 18.5 21.3 6.5 7.4 4.4
MLB 4.0 32.2 25.0 24.4 5.9 7.6 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
2026 Curveball SEA L 35 80.1 51.1 -0.2 10.3GLV -1.7 -8.5 -1.6 10.3GLV 2.2
2026 Sweeper SEA L 31 81.2 40.2 0.8 12.8GLV -2.3 1.4 -0.8 12.8GLV -0.9
2026 Changeup SEA L 4 87.8 36.0 1.7 13.0ARM -2.1 -0.7 5.5 13.0ARM -0.9
2026 Sinker SEA L 44 92.9 27.9 1.8 14.5ARM -1.8 3.8 3.8 14.5ARM -0.8
2026 4-Seam Fastball SEA L 6 93.2 20.4 -3.2 7.8ARM -2.0 11.0 -4.6 7.8ARM -0.2
2025 Curveball MIA L 145 80.6 52.3 1.7 10.9GLV -1.1 -10.1 0.4 10.9GLV 3.1
2025 Sweeper MIA L 158 82.4 39.5 1.2 13.5GLV -0.8 1.0 0.0 13.5GLV 0.5
2025 Slider MIA L 35 88.0 32.4 -1.4 1.8GLV -2.3 2.9 -0.8 1.8GLV -2.2
2025 Changeup MIA L 67 89.2 35.2 2.7 12.7ARM -2.6 -0.9 6.1 12.7ARM -1.5
2025 Sinker MIA L 136 94.0 25.6 0.4 15.1ARM -1.1 5.5 2.0 15.1ARM -0.3
2025 4-Seam Fastball MIA L 72 94.3 17.3 -0.9 8.8ARM -0.8 13.6 -2.3 8.8ARM 0.7
! 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 %
2026 Sinker -2.6 -1 44 36.7 10 .300 .600 .380 10.5 30.0 33.3 .196 .507 .292 42.9
2026 Curveball -2.9 -1 35 29.2 9 .375 .750 .500 23.5 33.3 17.6 .237 .640 .402 40.0
2026 Sweeper 1.6 1 31 25.8 11 .111 .111 .209 38.5 27.3 30.0 .159 .182 .251 16.7
2026 4-Seam Fastball -15.1 -1 6 5.0 1 1.000 2.000 1.250 25.0 0.0 0.0 .311 .681 .413 100.0
2026 Changeup -1.8 0 4 3.3 -- -- -- 0.0 -- 0.0 -- -- -- --
2025 Sweeper -0.6 -1 158 25.8 38 .171 .371 .301 40.3 39.5 28.3 .150 .247 .248 25.0
2025 Curveball 0.2 0 145 23.7 38 .226 .226 .318 29.3 28.9 22.4 .233 .271 .309 55.0
2025 Sinker -1.1 -2 136 22.2 32 .348 .609 .489 8.9 0.0 0.0 .319 .614 .480 60.9
2025 4-Seam Fastball 1.6 1 72 11.7 15 .154 .154 .213 26.3 26.7 15.4 .203 .266 .271 33.3
2025 Changeup -3.1 -2 67 10.9 15 .400 .733 .480 18.4 26.7 13.3 .353 .591 .401 36.4
2025 Slider -11.4 -4 35 5.7 11 .625 1.125 .732 27.8 18.2 22.2 .287 .548 .445 50.0
! 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
2026 Curveball 35 80.1 68 15.3 4:00 4:30 -30
2026 Sinker 43 92.9 72 15.6 10:30 9:15 75
2026 Sweeper 31 81.2 53 13.6 3:30 3:00 30
2025 Changeup 65 89.2 75 13.7 9:45 8:45 60
2025 Curveball 145 80.6 68 17.0 4:00 4:30 -30
2025 4-Seam Fastball 72 94.3 80 15.8 10:30 10:45 -15
2025 Sinker 136 94.0 74 16.6 10:30 9:30 60
2025 Slider 35 88.0 17 2.8 2:00 2:00 0
2025 Sweeper 158 82.4 52 14.4 3:30 3:15 15
! Note: Years are in reverse order.
! 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
2025 149 613 -1 1 -4 -3 -7
2026 31 120 -2 0 0 -1 -3
Player 180 733 -3 1 -4 -3 -10
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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 %
2025 613 50.2 63.3 85.6 27.9 47.1 42.9 57.6 45.7 26.1 9.1 83.9
2026 120 50.0 60.0 86.1 30.0 61.1 38.3 71.0 45.0 22.2 6.7 87.5
Player 733 50.2 62.8 85.7 28.2 49.5 42.2 59.9 45.6 25.4 8.7 84.4
MLB 48.7 67.0 82.7 28.6 57.9 42.6 61.2 47.3 25.0 7.3 76.2
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Run Value Pitching
Year Pitching Fastball Breaking Off
Speed
xERA Fastball
MPH
Fastball
Spin
Curve
Spin
Avg
EV
Chase% Whiff% K% BB% Barrel% Hard-
Hit%
GB% Extension
2025 46 48 47 10
2026 25 35 6
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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 %
2025 25.64 5 5.3 0 1 3 3 60.0
2026 25.93 2 1.0 1 1 0 1 50.0
Player 25.72 7 6.4 1 2 3 4 57.1
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
2025 5 6 4 6 6 5 5 5 6 5 5 7 5 6 5 5 5 5 5 7 5 5 6 5 5 5 5 6 5 6 4
2026 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Player 7 7 5 7 7 6 7 6 7 6 6 8 6 7 6 6 6 6 6 8 6 6 7 6 6 6 6 7 6 7 5
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

2026 +/-   2025
Results
BA .286 +.014 .272
xBA .200 -.040 .240
OBP .355 -.038 .393
xOBP .277 -.090 .367
SLG .536 +.088 .448
xSLG .447 +.064 .383
ISO .250 +.074 .176
xISO .247 +.104 .143
BABIP .353 +.008 .345
wOBA .385 +.018 .367
xwOBA .314 -.019 .333
wOBAcon .516 +.085 .431
xwOBAcon .400 +.026 .374
BACON .421 +.039 .382
xBACON .295 -.042 .337
Statcast Hit Metrics
Hard Hit % 36.8 -8.1 44.9
Avg Exit Velocity 90.6 +0.5 90.1
Launch Angle Sweet-Spot % 36.8 +7.6 29.2
Barrel % 10.5 +3.8 6.7
Avg Launch Angle 30.0 +25.1 4.9
Statcast Bat Tracking
Bat Speed 71.5 -0.9 72.4
Attack Angle 14° +4° 10°
Ideal Attack Angle % 50.0 -2.8 52.8
Attack Direction -7° -6° -1°
Swing Path - Tilt 32° 33°
Swing Length 7.6 +0.3 7.3
Statcast Pitch Metrics
Fastball Velocity 92.9 -1.2 94.1
Breaking Velocity 80.6 -1.6 82.2
Offspeed Velocity 87.8 -1.4 89.2
Batted Ball Results
Barrels 2 -4 6
Popup % 15.8 +13.6 2.2
Flyball % 42.1 +24.1 18.0
Line Drive % 15.8 -10.0 25.8
Groundball % 26.3 -27.6 53.9
Pull % 42.1 -0.6 42.7
Straight Away % 36.8 -1.4 38.2
Opposite Field % 21.1 +2.0 19.1
Weak Contact % 0.0 -6.7 6.7
Pull Airball % 36.8 +25.6 11.2
Topped Contact % 26.3 -17.5 43.8
Under Contact % 47.4 +35.0 12.4
Flare/Burner Contact % 10.5 -13.1 23.6
Solid Contact % 5.3 -1.4 6.7
HR/FB % 25.0 -6.3 31.3
Popups 3 +1 2
Flyballs 8 -8 16
Line Drives 3 -20 23
Groundballs 5 -43 48
Plate Discipline
In Zone % 50.0 -0.2 50.2
Out of Zone % 50.0 +0.2 49.8
Edge % 38.3 -4.6 42.9
Zone Swing % 60.0 -3.3 63.3
Out of Zone Swing % 30.0 +2.1 27.9
In Zone Contact % 86.1 +0.5 85.6
Out of Zone Contact % 61.1 +14.0 47.1
Whiff % 22.2 -3.9 26.1
First Strike % 71.0 +13.4 57.6
First Pitch Swing % 19.4 -12.4 31.8
Swing % 45.0 -0.7 45.7
Meatball Swing % 87.5 +3.6 83.9
Meatball % 6.7 -2.4 9.1
Zone Swing & Miss % 13.9 -0.5 14.4
Out of Zone Swing & Miss % 38.9 -14.0 52.9
In Zone 60 -248 308
Out of Zone 60 -245 305
Edge 46 -217 263
In Zone Swings 36 -159 195
Out of Zone Swings 18 -67 85
In Zone Swing & Misses 5 -23 28
Out of Zone Swing & Misses 7 -38 45
Basic
Pitches 120 -493 613
PA 31 -120 151
AB 28 -97 125
Hits 8 -26 34
Singles 5 -18 23
Doubles 1 -4 5
Triples 0 -1 1
Home Runs 2 -3 5
Walks 2 -20 22
Strikeouts 9 -27 36
K% 29.0 +5.2 23.8
BB% 6.5 -8.1 14.6
HBP 1 -2 3
Batted Balls 19 -70 89
Fastball Percent 41.7 +7.8 33.9
Offspeed Percent 3.3 -7.6 10.9
Breaking Percent 55.0 -0.1 55.1
Number of Fastballs 50 -158 208
Number of Offspeed 4 -63 67
Number of Breaking 66 -272 338
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2025 Shades 149 .367 77 0 0.0 72 29 40.3
2026 Shades 31 .385 14 3 21.4 17 11 64.7
! 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 %
2025 128 18.9 0.0% 0.0% 129 21.0 0.0% 3.1%
2026 30 18.0 0.0% 0.0% 26 19.8 0.0% 7.7%

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Pitch Distribution