P | Chicago Cubs
Bats/Throws: R/L | 6' 2" 213 lbs | Age: 29
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 9 1 2.98 56 2 2 60.1 51 1.26
2 Seasons 10 1 4.65 87 3 2 102.2 76 1.47
G W-L ERA IP SO WHIP
2025 31 1-0 7.02 42.1 25 1.77
2026 56 9-1 2.98 60.1 51 1.26
2 Seasons 87 10-1 4.65 102.2 76 1.47
MLB Percentile Rankings
Movement Profile (Induced Break)
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Statcast Statistics

Season Age Team 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 .490 .406 .363 .381 38.5 13.0 10.4 7.02 5.70
2026 28 941 165 11 6.7 4.5 88.6 112.4 12.1 35.8 .244 .384 .301 .316 .356 39.9 21.0 11.1 2.98 4.21
Player 1617 313 25 8.1 5.7 88.1 112.4 9.2 34.5 .262 .431 .347 .337 .368 39.2 17.4 10.8
MLB 7.6 4.9 88.6 122.9 12.6 33.3 .244 .407 .316 .316 .368 37.1 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
(40.6%) ,
Curveball
(16.9%) ,
Sweeper
(14.5%) ,
Sinker
(13.5%) ,
Slider
(13.5%) ,
Changeup
(1.0%) ,


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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 44.2 55.8 29.1 21.8 4.8 38.8 35.2 26.1 24.2 16.4 3.6 14.5 18.8 22.4
Player 46.3 53.7 27.8 22.4 3.5 38.3 38.3 23.3 24.6 18.8 2.9 13.7 19.5 20.4
MLB 44.1 55.9 24.3 24.6 7.1 37.5 37.3 25.0 20.7 17.5 5.8 16.9 19.8 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 8.1 35.1 19.6 21.6 4.7 9.6 7.3
2026 4.2 33.3 24.2 24.8 6.1 6.7 4.5
Player 6.1 34.2 22.0 23.3 5.4 8.1 5.7
MLB 4.1 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)
SeasonPitchTeamHand#MPHVertical
Drop
vs.
Comparable
Horizontal
Break
vs.
Comparable
Vertical
Break
vs. AvgHorizontal
Break
vs. Avg
2026 4-Seam Fastball L 372 94.7 16.0 -1.6 2.5ARM -4.8 14.3 -1.2 2.5ARM -5.4
2026 Sinker L 131 95.0 21.5 0.2 12.3ARM -2.6 8.8 -1.2 12.3ARM -3.0
2026 Changeup L 9 88.9 28.6 -2.5 6.8ARM -7.2 5.9 -1.1 6.8ARM -7.1
2026 Slider L 123 86.8 38.0 3.1 4.5GLV 0.6 -1.9 3.5 4.5GLV 0.0
2026 Sweeper L 136 85.2 38.2 0.9 13.3GLV 0.5 -0.5 1.1 13.3GLV -0.4
2026 Curveball L 157 79.5 57.3 3.2 9.8GLV 1.2 -13.8 3.7 9.8GLV 1.8
2025 4-Seam Fastball L 315 92.9 19.4 -4.1 0.9ARM -6.3 12.0 -3.9 0.9ARM -7.2
2025 Changeup L 23 87.3 31.0 -0.6 5.8ARM -8.6 4.6 0.6 5.8ARM -8.4
2025 Slider L 112 85.5 39.2 3.4 4.0GLV -0.3 -2.1 4.2 4.0GLV 0.0
2025 Curveball L 226 79.5 54.6 0.5 8.0GLV -0.7 -11.4 1.7 8.0GLV 0.2
! Note: Seasons are in reverse order.

Run Values by Pitch Type

Season Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2026 4-Seam Fastball 0.4 1 372 40.1 106 .209 .384 .338 13.9 19.8 20.2 .236 .404 .350 44.8
2026 Curveball -2.6 -4 157 16.9 33 .355 .677 .453 23.5 27.3 18.8 .273 .523 .359 45.5
2026 Sweeper 2.4 3 136 14.7 36 .139 .139 .125 37.7 38.9 25.5 .192 .257 .193 45.5
2026 Sinker 4.2 6 131 14.1 28 .115 .154 .159 14.5 10.7 25.0 .219 .264 .246 8.7
2026 Slider 0.2 0 123 13.3 35 .313 .375 .337 17.2 11.4 16.0 .307 .432 .353 42.9
2026 Changeup -3.2 0 9 1.0 1 1.000 1.000 .900 0.0 0.0 0.0 .486 .554 .450 100.0
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 .463 .337 36.5
2025 Slider -2.2 -2 112 16.6 27 .385 .654 .428 14.8 7.4 8.7 .311 .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

Season Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2026 Curveball 157 79.5 84 19.5 5:00 5:00 0
2026 4-Seam Fastball 372 94.7 74 14.0 11:15 11:45 -30
2026 Sinker 122 95.0 69 15.2 11:15 10:00 75
2026 Slider 123 86.8 34 6.2 3:15 4:00 -45
2026 Sweeper 136 85.2 51 14.4 4:15 3:15 60
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
Season Team PA Pitches Heart Shadow Chase Waste All
2025 193 676 -3 -8 -3 -3 -17
2026 239 928 7 11 -7 -4 6
Player 432 1,604 3 3 -10 3 -11
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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 941 48.3 65.4 89.8 26.5 58.3 43.3 57.9 45.4 19.7 7.1 77.3
Player 1,617 50.4 65.1 88.8 25.7 61.8 43.5 60.9 45.6 18.7 7.9 72.4
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
Season 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 65 59
2026 66 77 45 45 41 55 43 66 50 9 9 39 17 65 36 60 60
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Expected Home Runs

Adjusted

Season 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 25.16 6 6.8 -1 1 7 2 33.3
Player 24.21 17 16.3 1 3 10 9 52.9
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

Season 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 6 8 3 6 8 8 7 7 7 8 5 8 4 9 9 8 9 7 8 9 6 7 9 8 4 5 4 5 5 6 8
Player 17 17 11 15 18 18 16 17 16 17 15 18 13 20 19 15 19 17 17 20 15 15 20 18 13 14 12 16 14 15 18
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 .229 -.095 .324
xBA .244 -.040 .284
OBP .314 -.077 .391
xOBP .324 -.032 .356
SLG .360 -.205 .565
xSLG .384 -.106 .490
ISO .131 -.110 .241
xISO .140 -.067 .207
BABIP .272 -.052 .324
wOBA .301 -.105 .406
xwOBA .316 -.047 .363
wOBAcon .331 -.105 .436
xwOBAcon .356 -.025 .381
BACON .299 -.075 .374
xBACON .322 -.007 .329
Statcast Hit Metrics
Hard Hit % 39.9 +1.4 38.5
Avg Exit Velocity 88.6 +1.1 87.5
Launch Angle Sweet-Spot % 35.8 +2.7 33.1
Barrel % 6.7 -2.9 9.6
Avg Launch Angle 12.1 +6.0 6.1
Statcast Bat Tracking
Bat Speed 72.4 +0.3 72.1
Attack Angle -1° 10°
Ideal Attack Angle % 49.7 -6.6 56.3
Attack Direction +1°
Swing Path - Tilt 33° +1° 32°
Swing Length 7.2 0.0 7.2
Statcast Pitch Metrics
Fastball Velocity 94.8 +1.9 92.9
Breaking Velocity 83.5 +2.0 81.5
Offspeed Velocity 88.9 +1.6 87.3
Batted Ball Results
Barrels 11 -3 14
Popup % 4.8 +2.8 2.0
Flyball % 29.1 +2.7 26.4
Line Drive % 21.8 -1.2 23.0
Groundball % 44.2 -4.4 48.6
Pull % 38.8 +1.0 37.8
Straight Away % 35.2 -6.7 41.9
Opposite Field % 26.1 +5.8 20.3
Weak Contact % 4.2 -3.9 8.1
Pull Airball % 14.5 +1.7 12.8
Topped Contact % 33.3 -1.8 35.1
Under Contact % 24.2 +4.6 19.6
Flare/Burner Contact % 24.8 +3.2 21.6
Solid Contact % 6.1 +1.4 4.7
HR/FB % 12.5 -15.7 28.2
Popups 8 +5 3
Flyballs 48 +9 39
Line Drives 36 +2 34
Groundballs 73 +1 72
Plate Discipline
In Zone % 48.3 -5.1 53.4
Out of Zone % 51.7 +5.1 46.6
Edge % 43.3 -0.3 43.6
Zone Swing % 65.4 +0.6 64.8
Out of Zone Swing % 26.5 +2.1 24.4
In Zone Contact % 89.8 +2.2 87.6
Out of Zone Contact % 58.3 -9.2 67.5
Whiff % 19.7 +2.3 17.4
First Strike % 57.9 -6.9 64.8
First Pitch Swing % 31.4 -2.8 34.2
Swing % 45.4 -0.6 46.0
Meatball Swing % 77.3 +10.1 67.2
Meatball % 7.1 -1.9 9.0
Zone Swing & Miss % 10.2 -2.2 12.4
Out of Zone Swing & Miss % 41.7 +9.2 32.5
In Zone 448 +87 361
Out of Zone 480 +165 315
Edge 402 +107 295
In Zone Swings 293 +59 234
Out of Zone Swings 127 +50 77
In Zone Swing & Misses 30 +1 29
Out of Zone Swing & Misses 53 +28 25
Basic
Pitches 941 +265 676
PA 243 +50 193
AB 214 +44 170
Hits 49 -6 55
Singles 33 -4 37
Doubles 10 +4 6
Triples 0 -1 1
Home Runs 6 -5 11
Walks 27 +7 20
Strikeouts 51 +26 25
K% 21.0 +8.0 13.0
BB% 11.1 +0.7 10.4
HBP 0 0 0
Batted Balls 165 +17 148
Fastball Percent 53.5 +6.9 46.6
Offspeed Percent 1.0 -2.4 3.4
Breaking Percent 44.2 -5.8 50.0
Number of Fastballs 503 +188 315
Number of Offspeed 9 -14 23
Number of Breaking 416 +78 338
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Statcast Fielder Positioning

vs RHHvs LHH
SeasonAlignment TypePAwOBAPATotal%PATotal%
2025 Shades 193 .406 111 5 4.5 82 30 36.6
2026 Shades 242 .301 128 26 20.3 114 76 66.7
! 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 192 15.9 36.5% 0.0% 104 18.4 2.9% 0.0%
2026 225 15.9 31.6% 1.3% 166 18.1 2.4% 3.6%

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Pitch Distribution