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 6 1 2.40 40 2 1 45 46 1.24
2 Seasons 7 1 4.64 71 3 1 87.1 71 1.50
G W-L ERA IP SO WHIP
2025 31 1-0 7.02 42.1 25 1.77
2026 40 6-1 2.40 45 46 1.24
2 Seasons 71 7-1 4.64 87.1 71 1.50
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 .490 .406 .363 .381 38.5 13.0 10.4 7.02 5.70
2026 28 703 113 7 6.2 3.9 89.6 112.4 11.9 32.7 .233 .352 .293 .303 .358 42.3 25.7 11.2 2.40 3.82
Player 1379 261 21 8.1 5.6 88.4 112.4 8.6 33.0 .259 .424 .352 .335 .371 40.2 19.1 10.8
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

Rolison relies on 6 pitches.
Four Seamer
(42.0%) ,
Curveball
(17.8%) ,
Slider
(16.5%) ,
Sweeper
(13.2%) ,
Sinker
(9.1%) ,
Changeup
(1.3%) ,


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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 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 45.1 54.9 29.2 20.4 5.3 43.4 34.5 22.1 27.4 15.9 1.8 15.9 18.6 20.4
Player 47.1 52.9 27.6 21.8 3.4 40.2 38.7 21.1 26.1 19.2 1.9 14.2 19.5 19.2
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 8.1 35.1 19.6 21.6 4.7 9.6 7.3
2026 3.5 34.5 23.0 24.8 8.0 6.2 3.9
Player 6.1 34.9 21.1 23.0 6.1 8.1 5.6
MLB 4.0 32.3 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 4-Seam Fastball CHC L 290 94.6 15.9 -1.5 2.4ARM -4.9 14.5 -1.1 2.4ARM -5.6
2026 Sinker CHC L 63 95.0 21.2 0.0 11.5ARM -3.4 9.1 -1.5 11.5ARM -3.8
2026 Changeup CHC L 9 88.9 28.6 -2.5 6.8ARM -7.3 5.9 -1.2 6.8ARM -7.1
2026 Slider CHC L 114 86.8 38.0 3.1 4.6GLV 0.6 -1.9 3.4 4.6GLV 0.1
2026 Sweeper CHC L 91 85.3 37.5 0.4 12.9GLV 0.1 0.0 0.6 12.9GLV -0.8
2026 Curveball CHC L 123 79.7 57.1 3.2 9.7GLV 1.0 -13.7 3.5 9.7GLV 1.6
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 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 -0.3 -2.1 4.2 4.0GLV 0.0
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 0.7 2 290 42.0 83 .194 .373 .326 15.1 21.7 23.4 .223 .401 .343 47.1
2026 Curveball 0.0 0 123 17.8 27 .280 .400 .326 25.9 29.6 20.5 .244 .367 .295 47.1
2026 Slider -0.1 0 114 16.5 31 .345 .379 .347 17.3 12.9 18.2 .301 .383 .324 36.0
2026 Sweeper 1.9 2 91 13.2 25 .160 .160 .144 43.5 52.0 32.5 .199 .239 .190 41.7
2026 Sinker 5.0 3 63 9.1 9 .000 .000 .078 28.6 33.3 37.5 .050 .054 .120 0.0
2026 Changeup -3.3 0 9 1.3 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

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2026 Curveball 123 79.7 83 19.4 5:00 5:00 0
2026 4-Seam Fastball 290 94.6 74 14.1 11:15 11:45 -30
2026 Sinker 62 95.0 69 14.8 11:15 10:15 60
2026 Slider 114 86.8 34 6.4 3:15 4:00 -45
2026 Sweeper 91 85.3 50 13.9 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 176 690 7 8 -5 -2 7
Player 369 1,366 3 0 -8 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 676 53.4 64.8 87.6 24.4 67.5 43.6 64.8 46.0 17.4 9.0 67.2
2026 703 47.7 64.1 87.7 25.8 53.8 42.6 58.7 44.2 22.5 7.4 76.5
Player 1,379 50.5 64.5 87.6 25.1 60.0 43.1 61.8 45.1 19.9 8.2 71.4
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 27 62 65 59
2026 71 74 66 44 58 53 48 64 32 7 28 70 18 72 24 63 65
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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 25.13 4 3.9 0 1 4 1 25.0
Player 24.08 15 13.3 2 3 7 8 53.3
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 4 4 1 4 4 5 5 3 4 5 3 5 2 5 5 5 5 5 5 5 3 4 5 5 2 3 2 3 3 2 4
Player 15 13 9 13 14 15 14 13 13 14 13 15 11 16 15 12 15 15 14 16 12 12 16 15 11 12 10 14 12 11 14
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 .233 -.051 .284
OBP .315 -.076 .391
xOBP .320 -.036 .356
SLG .331 -.234 .565
xSLG .352 -.138 .490
ISO .102 -.139 .241
xISO .119 -.088 .207
BABIP .296 -.028 .324
wOBA .293 -.113 .406
xwOBA .303 -.060 .363
wOBAcon .340 -.096 .436
xwOBAcon .358 -.023 .381
BACON .321 -.053 .374
xBACON .330 +.001 .329
Statcast Hit Metrics
Hard Hit % 42.3 +3.8 38.5
Avg Exit Velocity 89.6 +2.1 87.5
Launch Angle Sweet-Spot % 32.7 -0.4 33.1
Barrel % 6.2 -3.4 9.6
Avg Launch Angle 11.9 +5.8 6.1
Statcast Bat Tracking
Bat Speed 72.7 +0.6 72.1
Attack Angle 10°
Ideal Attack Angle % 52.4 -3.9 56.3
Attack Direction +1°
Swing Path - Tilt 33° +1° 32°
Swing Length 7.3 +0.1 7.2
Statcast Pitch Metrics
Fastball Velocity 94.7 +1.8 92.9
Breaking Velocity 83.7 +2.2 81.5
Offspeed Velocity 88.9 +1.6 87.3
Batted Ball Results
Barrels 7 -7 14
Popup % 5.3 +3.3 2.0
Flyball % 29.2 +2.8 26.4
Line Drive % 20.4 -2.6 23.0
Groundball % 45.1 -3.5 48.6
Pull % 43.4 +5.6 37.8
Straight Away % 34.5 -7.4 41.9
Opposite Field % 22.1 +1.8 20.3
Weak Contact % 3.5 -4.6 8.1
Pull Airball % 15.9 +3.1 12.8
Topped Contact % 34.5 -0.6 35.1
Under Contact % 23.0 +3.4 19.6
Flare/Burner Contact % 24.8 +3.2 21.6
Solid Contact % 8.0 +3.3 4.7
HR/FB % 12.1 -16.1 28.2
Popups 6 +3 3
Flyballs 33 -6 39
Line Drives 23 -11 34
Groundballs 51 -21 72
Plate Discipline
In Zone % 47.7 -5.7 53.4
Out of Zone % 52.3 +5.7 46.6
Edge % 42.6 -1.0 43.6
Zone Swing % 64.1 -0.7 64.8
Out of Zone Swing % 25.8 +1.4 24.4
In Zone Contact % 87.7 +0.1 87.6
Out of Zone Contact % 53.8 -13.7 67.5
Whiff % 22.5 +5.1 17.4
First Strike % 58.7 -6.1 64.8
First Pitch Swing % 29.1 -5.1 34.2
Swing % 44.2 -1.8 46.0
Meatball Swing % 76.5 +9.3 67.2
Meatball % 7.4 -1.6 9.0
Zone Swing & Miss % 12.3 -0.1 12.4
Out of Zone Swing & Miss % 46.2 +13.7 32.5
In Zone 329 -32 361
Out of Zone 361 +46 315
Edge 294 -1 295
In Zone Swings 211 -23 234
Out of Zone Swings 93 +16 77
In Zone Swing & Misses 26 -3 29
Out of Zone Swing & Misses 43 +18 25
Basic
Pitches 703 +27 676
PA 179 -14 193
AB 157 -13 170
Hits 36 -19 55
Singles 28 -9 37
Doubles 4 -2 6
Triples 0 -1 1
Home Runs 4 -7 11
Walks 20 0 20
Strikeouts 46 +21 25
K% 25.7 +12.7 13.0
BB% 11.2 +0.8 10.4
HBP 0 0 0
Batted Balls 113 -35 148
Fastball Percent 50.2 +3.6 46.6
Offspeed Percent 1.3 -2.1 3.4
Breaking Percent 46.7 -3.3 50.0
Number of Fastballs 353 +38 315
Number of Offspeed 9 -14 23
Number of Breaking 328 -10 338
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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 179 .293 98 20 20.4 81 59 72.8
! 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 162 15.7 33.3% 1.2% 129 18.0 3.1% 3.1%

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Pitch Distribution