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 5 1 2.80 32 2 1 35.1 36 1.30
2 Seasons 6 1 5.10 63 3 1 77.2 61 1.56
G W-L ERA IP SO WHIP
2025 31 1-0 7.02 42.1 25 1.77
2026 32 5-1 2.80 35.1 36 1.30
2 Seasons 63 6-1 5.10 77.2 61 1.56
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Pitch Usage
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 28 550 90 6 6.7 4.2 90.3 112.4 12.1 32.2 .237 .369 .306 .315 .369 44.3 25.2 11.9 2.80 4.13
Player 1226 238 20 8.5 6.0 88.6 112.4 8.4 32.8 .264 .439 .363 .343 .377 40.7 18.2 11.0
MLB 7.6 4.9 88.6 122.9 12.5 33.3 .243 .407 .316 .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
(44.5%) ,
Slider
(19.4%) ,
Curveball
(19.2%) ,
Sweeper
(10.1%) ,
Sinker
(5.8%) ,
Changeup
(1.1%) ,


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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 45.6 54.4 28.9 20.0 5.6 44.4 31.1 24.4 28.9 14.4 2.2 15.6 16.7 22.2
Player 47.5 52.5 27.3 21.8 3.4 40.3 37.8 21.8 26.5 18.9 2.1 13.9 18.9 19.7
MLB 44.2 55.8 24.2 24.6 7.1 37.5 37.3 25.1 20.7 17.6 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 4.4 35.6 21.1 23.3 8.9 6.7 4.2
Player 6.7 35.3 20.2 22.3 6.3 8.5 6.0
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

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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 31 95.1 20.1 -1.0 11.6ARM -3.4 10.0 -2.5 11.6ARM -3.8
2026 4-Seam Fastball CHC L 239 94.6 15.8 -1.4 2.4ARM -5.0 14.6 -1.1 2.4ARM -5.6
2026 Slider CHC L 104 86.8 38.0 3.1 4.6GLV 0.6 -1.9 3.3 4.6GLV 0.2
2026 Curveball CHC L 103 79.8 57.1 3.2 9.6GLV 0.9 -13.8 3.7 9.6GLV 1.4
2026 Sweeper CHC L 54 85.3 37.6 0.6 13.3GLV 0.4 -0.1 0.7 13.3GLV -0.4
2026 Changeup CHC L 6 88.6 28.4 -2.7 7.5ARM -6.7 6.3 -1.7 7.5ARM -6.4
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 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 0.7 2 239 44.5 71 .190 .397 .326 15.7 23.9 27.0 .211 .396 .332 48.8
2026 Slider 0.4 0 104 19.4 26 .333 .333 .331 17.4 11.5 16.7 .334 .429 .360 38.1
2026 Curveball 0.5 0 103 19.2 23 .238 .381 .304 27.1 30.4 22.6 .224 .342 .283 42.9
2026 Sweeper -0.9 0 54 10.1 14 .286 .286 .257 44.4 57.1 30.8 .224 .267 .213 66.7
2026 Sinker 4.9 2 31 5.8 6 .000 .000 .117 28.6 16.7 50.0 .076 .081 .176 0.0
2026 Changeup -0.4 0 6 1.1 -- -- -- 0.0 -- 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 .571 .361 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 103 79.8 83 19.4 5:00 5:00 0
2026 4-Seam Fastball 239 94.6 75 14.3 11:15 11:45 -30
2026 Sinker 30 95.1 70 15.5 11:15 10:15 60
2026 Slider 104 86.8 34 6.4 3:15 4:00 -45
2026 Sweeper 54 85.3 49 14.3 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.
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! 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 140 537 5 4 -4 -2 4
Player 333 1,213 2 -3 -7 2 -13
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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 550 47.5 65.9 87.5 25.5 55.6 41.0 59.4 44.9 21.9 7.4 77.5
Player 1,226 50.8 65.3 87.6 25.0 61.7 42.5 62.5 45.5 19.4 8.3 71.3
MLB 48.7 67.0 82.6 28.6 57.9 42.7 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 66 59
2026 62 67 53 49 48 51 51 62 17 8 25 68 15 64 14 67 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 25.13 4 3.3 1 1 3 1 25.0
Player 24.08 15 12.7 2 3 6 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 3 1 3 3 4 4 2 3 4 3 4 2 4 4 4 4 4 4 4 3 3 4 4 2 3 2 3 4 2 4
Player 15 12 9 12 13 14 13 12 12 13 13 14 11 15 14 11 14 14 13 15 12 11 15 14 11 12 10 14 13 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 .234 -.090 ↓ .324
xBA .237 -.047 ↓ .284
OBP .324 -.067 ↓ .391
xOBP .329 -.027 ↓ .356
SLG .355 -.210 ↓ .565
xSLG .369 -.122 ↓ .491
ISO .121 -.120 ↓ .241
xISO .132 -.075 ↓ .207
BABIP .294 -.030 ↓ .324
wOBA .306 -.100 ↓ .406
xwOBA .315 -.049 ↓ .364
wOBAcon .354 -.082 ↓ .436
xwOBAcon .369 -.012 ↓ .381
BACON .326 -.048 ↓ .374
xBACON .335 +.006 ↑ .329
Statcast Hit Metrics
Hard Hit % 44.3 +5.8 ↑ 38.5
Avg Exit Velocity 90.3 +2.8 ↑ 87.5
Launch Angle Sweet-Spot % 32.2 -0.9 ↓ 33.1
Barrel % 6.7 -2.9 ↓ 9.6
Avg Launch Angle 12.1 +6.0 ↑ 6.1
Statcast Bat Tracking
Bat Speed 72.6 +0.5 ↑ 72.1
Attack Angle 9° -1° ↓ 10°
Ideal Attack Angle % 53.8 -2.9 ↓ 56.7
Attack Direction 0° 0° ↑ -1°
Swing Path - Tilt 33° +1° ↑ 32°
Swing Length 7.3 +0.1 ↑ 7.2
Statcast Pitch Metrics
Fastball Velocity 94.6 +1.7 ↑ 92.9
Breaking Velocity 83.7 +2.2 ↑ 81.5
Offspeed Velocity 88.6 +1.3 ↑ 87.3
Batted Ball Results
Barrels 6 -8 ↓ 14
Popup % 5.6 +3.6 ↑ 2.0
Flyball % 28.9 +2.5 ↑ 26.4
Line Drive % 20.0 -3.0 ↓ 23.0
Groundball % 45.6 -3.0 ↓ 48.6
Pull % 44.4 +6.6 ↑ 37.8
Straight Away % 31.1 -10.8 ↓ 41.9
Opposite Field % 24.4 +4.1 ↑ 20.3
Weak Contact % 4.4 -3.7 ↓ 8.1
Pull Airball % 15.6 +2.8 ↑ 12.8
Topped Contact % 35.6 +0.5 ↑ 35.1
Under Contact % 21.1 +1.5 ↑ 19.6
Flare/Burner Contact % 23.3 +1.7 ↑ 21.6
Solid Contact % 8.9 +4.2 ↑ 4.7
HR/FB % 15.4 -12.8 ↓ 28.2
Popups 5 +2 ↑ 3
Flyballs 26 -13 ↓ 39
Line Drives 18 -16 ↓ 34
Groundballs 41 -31 ↓ 72
Plate Discipline
In Zone % 47.5 -5.9 ↓ 53.4
Out of Zone % 52.5 +5.9 ↑ 46.6
Edge % 41.0 -2.6 ↓ 43.6
Zone Swing % 65.9 +1.1 ↑ 64.8
Out of Zone Swing % 25.5 +1.1 ↑ 24.4
In Zone Contact % 87.5 -0.1 ↓ 87.6
Out of Zone Contact % 55.6 -11.9 ↓ 67.5
Whiff % 21.9 +4.5 ↑ 17.4
First Strike % 59.4 -5.4 ↓ 64.8
First Pitch Swing % 32.9 -1.3 ↓ 34.2
Swing % 44.9 -1.1 ↓ 46.0
Meatball Swing % 77.5 +10.3 ↑ 67.2
Meatball % 7.4 -1.6 ↓ 9.0
Zone Swing & Miss % 12.5 +0.1 ↑ 12.4
Out of Zone Swing & Miss % 44.4 +11.9 ↑ 32.5
In Zone 255 -106 ↓ 361
Out of Zone 282 -33 ↓ 315
Edge 220 -75 ↓ 295
In Zone Swings 168 -66 ↓ 234
Out of Zone Swings 72 -5 ↓ 77
In Zone Swing & Misses 21 -8 ↓ 29
Out of Zone Swing & Misses 32 +7 ↑ 25
Basic
Pitches 550 -126 ↓ 676
PA 143 -50 ↓ 193
AB 124 -46 ↓ 170
Hits 29 -26 ↓ 55
Singles 22 -15 ↓ 37
Doubles 3 -3 ↓ 6
Triples 0 -1 ↓ 1
Home Runs 4 -7 ↓ 11
Walks 17 -3 ↓ 20
Strikeouts 36 +11 ↑ 25
K% 25.2 +12.2 ↑ 13.0
BB% 11.9 +1.5 ↑ 10.4
HBP 0 0 0
Batted Balls 90 -58 ↓ 148
Fastball Percent 49.1 +2.5 ↑ 46.6
Offspeed Percent 1.1 -2.3 ↓ 3.4
Breaking Percent 47.5 -2.5 ↓ 50.0
Number of Fastballs 270 -45 ↓ 315
Number of Offspeed 6 -17 ↓ 23
Number of Breaking 261 -77 ↓ 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 143 .306 82 15 18.3 61 41 67.2
! 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 129 15.9 30.2% 1.6% 102 17.9 3.9% 2.9%

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Pitch Distribution

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