P | Chicago Cubs
Bats/Throws: R/L | 6' 2" 213 lbs | Age: 28
Draft: 2018 | Rd. 1, No. 22, Colorado Rockies | Ole Miss
W L ERA G GS SV IP SO WHIP
2025 1 0 7.02 31 1 0 42.1 25 1.77
2026 3 0 3.75 10 0 0 12 13 1.42
2 Seasons 4 0 6.29 41 1 0 54.1 38 1.69
G W-L ERA IP SO WHIP
2025 31 1-0 7.02 42.1 25 1.77
2026 10 3-0 3.75 12 13 1.42
2 Seasons 41 4-0 6.29 54.1 38 1.69
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 27 676 148 14 9.6 7.3 87.5 111.7 6.1 33.1 .284 .491 .406 .364 .381 38.5 13.0 10.4 7.02 5.73
2026 28 187 31 2 6.5 4.0 90.2 109.0 12.1 35.5 .243 .369 .346 .315 .372 41.9 26.0 12.0 3.75 3.93
Player 863 179 16 9.0 6.6 88.0 111.7 7.1 33.5 .276 .466 .394 .354 .380 39.1 15.6 10.7
MLB 7.6 4.9 88.6 122.9 12.5 33.3 .243 .408 .315 .316 .369 37.0 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Rolison relies on 6 pitches.
Four Seamer
(48.1%) ,
Slider
(19.8%) ,
Curveball
(18.7%) ,
Sweeper
(8.6%) ,
Changeup
(3.2%) ,
Sinker
(1.6%) ,


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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 48.6 51.4 26.4 23.0 2.0 37.8 41.9 20.3 25.0 21.6 2.0 12.8 20.3 18.2
2026 45.2 54.8 29.0 19.4 6.5 45.2 29.0 25.8 25.8 12.9 6.5 19.4 16.1 19.4
Player 48.0 52.0 26.8 22.3 2.8 39.1 39.7 21.2 25.1 20.1 2.8 14.0 19.6 18.4
MLB 44.2 55.8 24.1 24.6 7.1 37.4 37.3 25.1 20.7 17.6 5.9 16.8 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 8.1 35.1 19.6 21.6 4.7 9.6 7.3
2026 6.5 32.3 19.4 25.8 9.7 6.5 4.0
Player 7.8 34.6 19.6 22.3 5.6 9.0 6.6
MLB 4.0 32.4 24.9 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 Sinker CHC L 3 94.6 20.1 -1.5 11.7ARM -3.6 10.3 -3.1 11.7ARM -4.1
2026 4-Seam Fastball CHC L 90 94.3 15.0 -0.7 2.9ARM -4.4 15.7 -0.3 2.9ARM -5.1
2026 Slider CHC L 37 86.7 37.7 2.9 4.4GLV 0.3 -1.6 2.9 4.4GLV -0.1
2026 Curveball CHC L 35 79.6 57.3 3.1 9.6GLV 0.8 -13.8 3.7 9.6GLV 1.4
2026 Sweeper CHC L 16 84.4 38.7 0.9 13.5GLV 0.1 -0.2 0.7 13.5GLV -0.2
2026 Changeup CHC L 6 88.6 28.4 -2.7 7.5ARM -7.0 6.3 -2.0 7.5ARM -6.7
2025 Changeup COL L 23 87.3 31.0 -0.6 5.8ARM -8.6 4.6 0.6 5.8ARM -8.4
2025 Slider COL L 112 85.5 39.2 3.4 4.0GLV -0.4 -2.1 4.2 4.0GLV 0.0
2025 4-Seam Fastball COL L 315 92.9 19.4 -4.1 0.9ARM -6.3 12.0 -3.9 0.9ARM -7.2
2025 Curveball COL L 226 79.5 54.6 0.5 8.0GLV -0.7 -11.4 1.7 8.0GLV 0.2
! 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 4-Seam Fastball 1.6 1 90 48.1 25 .150 .400 .320 19.4 28.0 29.2 .160 .296 .294 46.2
2026 Slider 0.4 0 37 19.8 11 .400 .400 .391 6.3 18.2 33.3 .327 .388 .348 25.0
2026 Curveball -1.1 0 35 18.7 10 .300 .600 .380 11.1 20.0 25.0 .359 .574 .398 50.0
2026 Sweeper -2.2 0 16 8.6 3 .333 .333 .300 66.7 66.7 20.0 .190 .215 .177 100.0
2026 Changeup -0.2 0 6 3.2 -- -- -- 0.0 -- 0.0 -- -- -- --
2026 Sinker 14.8 0 3 1.6 1 .000 .000 .000 33.3 0.0 -- .049 .054 .044 0.0
2025 4-Seam Fastball -2.3 -7 315 46.6 91 .307 .560 .439 16.8 12.1 15.5 .284 .504 .396 41.5
2025 Curveball -3.7 -8 226 33.4 69 .333 .571 .416 20.5 17.4 16.2 .277 .464 .338 36.5
2025 Slider -2.2 -2 112 16.6 27 .385 .654 .428 14.8 7.4 8.7 .312 .570 .360 40.0
2025 Changeup 3.6 1 23 3.4 6 .167 .167 .150 0.0 0.0 0.0 .239 .269 .224 16.7
! 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 79.6 82 19.5 5:00 5:00 0
2026 4-Seam Fastball 90 94.3 78 15.4 11:15 11:45 -30
2026 Slider 37 86.7 30 5.9 3:15 4:00 -45
2026 Sweeper 16 84.4 49 14.5 4:00 3:15 45
2025 Changeup 23 87.3 63 7.2 11:00 10:00 60
2025 Curveball 226 79.5 77 16.2 4:45 5:00 -15
2025 4-Seam Fastball 315 92.9 67 11.5 11:30 12:00 -30
2025 Slider 111 85.5 35 5.9 3:30 4:15 -45
! 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 193 676 -3 -8 -3 -3 -17
2026 50 187 1 2 -1 -1 1
Player 243 863 -2 -5 -4 -2 -16
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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 676 53.4 64.8 87.6 24.4 67.5 43.6 64.8 46.0 17.4 9.0 67.2
2026 187 47.6 64.0 87.7 20.4 65.0 34.2 58.0 41.2 18.2 10.7 75.0
Player 863 52.1 64.7 87.6 23.5 67.0 41.6 63.4 45.0 17.5 9.4 69.1
MLB 48.7 67.0 82.6 28.5 58.0 42.7 61.1 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 27 62 66 59
2026 48 55 69
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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 23.69 11 9.4 2 2 3 7 63.6
2026 22.48 2 1.3 1 0 2 0 0.0
Player 23.51 13 10.8 2 2 5 7 53.8
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 11 9 8 9 10 10 9 10 9 9 10 10 9 11 10 7 10 10 9 11 9 8 11 10 9 9 8 11 9 9 10
2026 2 1 0 1 1 2 2 1 2 1 1 2 0 2 2 2 2 2 2 2 0 1 2 2 0 1 1 1 1 1 2
Player 13 10 8 10 11 12 11 11 11 10 11 12 9 13 12 9 12 12 11 13 9 9 13 12 9 10 9 12 10 10 12
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 .250 -.074 .324
xBA .243 -.041 .284
OBP .340 -.051 .391
xOBP .334 -.022 .356
SLG .432 -.133 .565
xSLG .369 -.122 .491
ISO .182 -.059 .241
xISO .126 -.081 .207
BABIP .310 -.014 .324
wOBA .346 -.060 .406
xwOBA .315 -.049 .364
wOBAcon .421 -.015 .436
xwOBAcon .372 -.009 .381
BACON .355 -.019 .374
xBACON .345 +.016 .329
Statcast Hit Metrics
Hard Hit % 41.9 +3.4 38.5
Avg Exit Velocity 90.2 +2.7 87.5
Launch Angle Sweet-Spot % 35.5 +2.4 33.1
Barrel % 6.5 -3.1 9.6
Avg Launch Angle 12.1 +6.0 6.1
Statcast Bat Tracking
Bat Speed 72.5 +0.4 72.1
Attack Angle -1° 10°
Ideal Attack Angle % 60.9 +4.2 56.7
Attack Direction +2° -1°
Swing Path - Tilt 33° 32°
Swing Length 7.3 +0.1 7.2
Statcast Pitch Metrics
Fastball Velocity 94.3 +1.4 92.9
Breaking Velocity 83.5 +2.0 81.5
Offspeed Velocity 88.6 +1.3 87.3
Batted Ball Results
Barrels 2 -12 14
Popup % 6.5 +4.5 2.0
Flyball % 29.0 +2.6 26.4
Line Drive % 19.4 -3.6 23.0
Groundball % 45.2 -3.4 48.6
Pull % 45.2 +7.4 37.8
Straight Away % 29.0 -12.9 41.9
Opposite Field % 25.8 +5.5 20.3
Weak Contact % 6.5 -1.6 8.1
Pull Airball % 19.4 +6.6 12.8
Topped Contact % 32.3 -2.8 35.1
Under Contact % 19.4 -0.2 19.6
Flare/Burner Contact % 25.8 +4.2 21.6
Solid Contact % 9.7 +5.0 4.7
HR/FB % 22.2 -6.0 28.2
Popups 2 -1 3
Flyballs 9 -30 39
Line Drives 6 -28 34
Groundballs 14 -58 72
Plate Discipline
In Zone % 47.6 -5.8 53.4
Out of Zone % 52.4 +5.8 46.6
Edge % 34.2 -9.4 43.6
Zone Swing % 64.0 -0.8 64.8
Out of Zone Swing % 20.4 -4.0 24.4
In Zone Contact % 87.7 +0.1 87.6
Out of Zone Contact % 65.0 -2.5 67.5
Whiff % 18.2 +0.8 17.4
First Strike % 58.0 -6.8 64.8
First Pitch Swing % 28.0 -6.2 34.2
Swing % 41.2 -4.8 46.0
Meatball Swing % 75.0 +7.8 67.2
Meatball % 10.7 +1.7 9.0
Zone Swing & Miss % 12.3 -0.1 12.4
Out of Zone Swing & Miss % 35.0 +2.5 32.5
In Zone 89 -272 361
Out of Zone 98 -217 315
Edge 64 -231 295
In Zone Swings 57 -177 234
Out of Zone Swings 20 -57 77
In Zone Swing & Misses 7 -22 29
Out of Zone Swing & Misses 7 -18 25
Basic
Pitches 187 -489 676
PA 50 -143 193
AB 44 -126 170
Hits 11 -44 55
Singles 7 -30 37
Doubles 2 -4 6
Triples 0 -1 1
Home Runs 2 -9 11
Walks 6 -14 20
Strikeouts 13 -12 25
K% 26.0 +13.0 13.0
BB% 12.0 +1.6 10.4
HBP 0 0 0
Batted Balls 31 -117 148
Number of Fastballs 93 -222 315
Number of Offspeed 6 -17 23
Number of Breaking 88 -250 338
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2025 Shades 193 .406 111 5 4.5 82 30 36.6
2026 Shades 50 .346 31 5 16.1 19 15 78.9
! 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 192 15.9 36.5% 0.0% 104 18.4 2.9% 0.0%
2026 40 15.5 30.0% 0.0% 42 18.0 2.4% 2.4%

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Pitch Distribution