P | Miami Marlins
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
1 Season 4 2 7.34 31 0 0 30.2 36 1.83
G W-L ERA IP SO WHIP
2025 31 4-2 7.34 30.2 36 1.83
1 Season 31 4-2 7.34 30.2 36 1.83
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 .243 .377 .367 .332 .373 44.9 23.8 14.6 7.34 4.67
Player 613 89 6 6.7 4.0 90.1 114.2 4.9 29.2 .243 .377 .367 .332 .373 44.9 23.8 14.6
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

Simpson relies on 6 pitches.
Sweeper
(25.8%) ,
Curveball
(23.7%) ,
Sinker
(22.2%) ,
Four Seamer
(11.7%) ,
Changeup
(10.9%) ,
Slider
(5.7%) ,


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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
Player 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
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
2025 6.7 43.8 12.4 23.6 6.7 6.7 4.0
Player 6.7 43.8 12.4 23.6 6.7 6.7 4.0
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 Sinker MIA L 136 94.0 25.6 0.3 15.1ARM -1.1 5.5 2.0 15.1ARM -0.3
2025 Changeup MIA L 67 89.2 35.2 2.7 12.7ARM -2.6 -0.9 6.1 12.7ARM -1.5
2025 4-Seam Fastball MIA L 72 94.3 17.3 -0.9 8.8ARM -0.8 13.6 -2.2 8.8ARM 0.7
2025 Slider MIA L 35 88.0 32.4 -1.6 1.8GLV -2.5 2.9 -0.9 1.8GLV -2.3
2025 Curveball MIA L 145 80.6 52.3 2.0 10.9GLV -1.2 -10.1 0.5 10.9GLV 3.1
2025 Sweeper MIA L 158 82.4 39.5 1.1 13.5GLV -0.7 1.0 0.0 13.5GLV 0.5
! 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 Sweeper -0.6 -1 158 25.8 38 .171 .371 .301 40.3 39.5 28.3 .149 .234 .243 25.0
2025 Curveball 0.2 0 145 23.7 38 .226 .226 .318 29.3 28.9 22.4 .234 .270 .308 55.0
2025 Sinker -1.1 -2 136 22.2 32 .348 .609 .489 8.9 0.0 0.0 .328 .600 .481 60.9
2025 4-Seam Fastball 1.6 1 72 11.7 15 .154 .154 .213 26.3 26.7 15.4 .209 .257 .269 33.3
2025 Changeup -3.1 -2 67 10.9 15 .400 .733 .480 18.4 26.7 13.3 .355 .602 .406 36.4
2025 Slider -11.4 -4 35 5.7 11 .625 1.125 .732 27.8 18.2 22.2 .290 .557 .451 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
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
Player 149 613 -1 1 -4 -1 -7
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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 50.3 63.1 85.6 27.9 47.1 42.7 57.6 45.7 26.1 9.1 83.9
Player 613 50.3 63.1 85.6 27.9 47.1 42.7 57.6 45.7 26.1 9.1 83.9
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
2025 46 48 47 10
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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
Player 25.64 5 5.3 0 1 3 3 60.0
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
Player 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
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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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2025 Shades 149 .367 77 0 0.0 72 29 40.3
! 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%

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Pitch Distribution