Isaac Mattson
P | Bats/Throws: R/R | 6' 2" 205LBS | Age: 29
Draft: 2017 | Rd: 19, #565, Los Angeles Angels | Pittsburgh
W L ERA G GS SV IP SO WHIP
2021 0 0 6.23 4 0 0 4.1 3 2.31
2024 0 0 5.06 3 0 0 5.1 6 1.13
2 Seasons 0 0 5.59 7 0 0 9.2 9 1.66
G W-L ERA IP SO WHIP
2021 4 0-0 6.23 4.1 3 2.31
2024 3 0-0 5.06 5.1 6 1.13
2 Seasons 7 0-0 5.59 9.2 9 1.66
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 25 91 15 2 13.3 8.7 90.0 107.1 25.2 26.7 .226 .532 .357 .397 .378 46.7 13.0 21.7 6.23 7.21
2024 28 100 11 1 9.1 4.3 83.3 104.3 6.8 36.4 .225 .330 .219 .359 .372 27.3 26.1 21.7 5.06 5.60
Player 191 26 3 11.5 6.5 87.2 107.1 17.4 30.8 .225 .434 .288 .378 .376 38.5 19.6 21.7
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .405 .316 .315 .368 36.5 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Mattson relies on 3 pitches.
Four Seamer
(70.0%) ,
Changeup
(23.0%) ,
Slider
(7.0%) ,


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Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2021 33.3 53.3 6.7 6.7 20.0 33.3 46.7 0.0 20.0 40.0 13.3 13.3 13.3 8.7
2024 54.5 18.2 18.2 9.1 9.1 54.5 36.4 9.1 27.3 18.2 27.3 9.1 9.1 4.3
Player 42.3 38.5 11.5 7.7 15.4 42.3 42.3 3.8 23.1 30.8 19.2 11.5 11.5 6.5
MLB 44.4 23.8 24.7 7.1 37.2 37.5 25.2 3.9 32.6 24.8 24.4 5.9 7.0 4.8
! 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
2024 Slider PIT R 7 86.2 30.2 -4.9 0.9GLV -3.6 6.5 -4.9 0.9GLV -4.2
2024 Changeup PIT R 23 85.1 28.8 -3.0 12.2ARM -1.9 9.1 -4.2 12.2ARM -2.0
2024 4-Seam Fastball PIT R 70 94.0 11.8 3.0 9.5ARM 2.5 19.3 3.5 9.5ARM 2.0
2021 Curveball BAL R 12 80.9 46.3 -6.4 2.4GLV -4.8 -4.4 -5.7 2.4GLV -6.8
2021 Changeup BAL R 7 86.2 25.1 -3.7 14.8ARM 1.4 11.8 -5.5 14.8ARM 0.9
2021 4-Seam Fastball BAL R 60 92.8 11.8 2.9 8.5ARM 2.0 20.2 4.0 8.5ARM 1.3
2021 Slider BAL R 12 84.6 31.3 -5.3 3.7GLV -1.1 6.9 -5.1 3.7GLV -2.0
! 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 %
2024 4-Seam Fastball -0.9 -1 70 70.0 18 .083 .083 .283 15.6 22.2 18.2 .243 .289 .389 25.0
2024 Changeup 4.0 1 23 23.0 5 .000 .000 .000 42.9 40.0 28.6 .180 .429 .258 33.3
2024 Slider -9.9 -1 7 7.0 -- -- -- -- -- 0.0 -- -- -- --
2021 4-Seam Fastball -2.7 -2 60 65.9 13 .333 .444 .450 18.5 7.7 5.9 .253 .584 .455 50.0
2021 Slider 10.0 1 12 13.2 3 .000 .000 .000 60.0 33.3 50.0 .087 .095 .081 0.0
2021 Curveball -4.2 -1 12 13.2 4 .667 .667 .625 33.3 25.0 14.3 .180 .208 .312 0.0
2021 Changeup 6.8 0 7 7.7 3 .000 .000 .000 0.0 0.0 0.0 .328 1.138 .589 100.0
! 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
2024 Changeup 23 85.1 94 15.2 1:45 2:00 -15
2024 4-Seam Fastball 70 94.0 99 21.3 1:00 1:00 0
2021 Curveball 12 80.9 44 7.3 8:00 6:45 75
2021 4-Seam Fastball 60 92.8 99 21.6 12:45 12:45 0
2021 Slider 12 84.6 50 7.0 12:00 10:45 75
! 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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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2024 23 100 2 0 -2 0 0
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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 91 42.9 71.8 82.1 25.0 61.5 34.1 52.2 45.1 24.4 5.5 60.0
2024 100 48.0 66.7 81.3 26.9 64.3 45.0 47.8 46.0 23.9 10.0 90.0
Player 191 45.5 69.0 81.7 26.0 63.0 39.8 50.0 45.5 24.1 7.9 80.0
MLB 48.7 67.0 82.0 28.5 57.8 42.6 61.0 47.2 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 36 57 84
2024 50 77 70
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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 -- 0 0.3 0 2 0 0 --
Player -- 0 0.3 0 2 0 0 --
Note: xHR tells how many of this pitcher's home runs 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 0 0 0 1 0 0 0 1 0 0 0 2 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0
Player 0 0 0 1 0 0 0 1 0 0 0 2 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0
Note: xHR tells how many of this pitcher's home runs 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%
2021 Shifts 23 .357 15 3 20.0 8 5 62.5
2024 Shades 23 .219 13 0 0.0 10 0 0.0
! 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 18 17.1 27.8% 0.0% 23 21.2 0.0% 4.3%
2024 23 15.6 26.1% 0.0% 20 18.8 0.0% 0.0%

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Pitch Distribution