Stephen Kolek
P | Bats/Throws: R/R | 6' 3" 210LBS | Age: 27
Draft: 2018 | Rd: 11, #344, Los Angeles Dodgers | Texas A&M
W L ERA G GS SV IP SO WHIP
2024 3 0 5.21 42 0 0 46.2 39 1.52
1 Season 3 0 5.21 42 0 0 46.2 39 1.52
G W-L ERA IP SO WHIP
2024 42 3-0 5.21 46.2 39 1.52
1 Season 42 3-0 5.21 46.2 39 1.52
MLB Percentile Rankings
Movement Profile (Induced Break)
?

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
2024 27 797 156 6 3.8 2.8 88.1 113.5 3.6 30.8 .279 .405 .336 .325 .370 41.0 18.5 5.7 5.21 4.46
Player 797 156 6 3.8 2.8 88.1 113.5 3.6 30.8 .279 .405 .336 .325 .370 41.0 18.5 5.7
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

Kolek relies on 6 pitches.
Sinker
(40.5%) ,
Cutter
(19.3%) ,
Four Seamer
(13.2%) ,
Sweeper
(10.4%) ,
Slider
(9.7%) ,
Changeup
(6.9%) ,


  •   
  •   
  •   

+ If Available Pitches Click to Video.


  •   
  •   
  •   
  •   
  •   
  •   
  •   

Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2024 56.4 16.7 25.6 1.3 28.2 39.1 32.7 4.5 46.8 12.2 26.9 5.8 3.8 2.8
Player 56.4 16.7 25.6 1.3 28.2 39.1 32.7 4.5 46.8 12.2 26.9 5.8 3.8 2.8
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 Sinker SD R 323 95.2 24.9 1.9 15.3ARM -0.2 5.5 1.8 15.3ARM 0.5
2024 Cutter SD R 154 92.4 24.1 -1.4 0.8GLV -0.5 7.8 -0.5 0.8GLV -1.9
2024 Sweeper SD R 83 83.7 42.2 4.8 16.2GLV 2.4 -2.8 4.4 16.2GLV 1.9
2024 Slider SD R 77 88.2 34.1 0.8 3.1GLV -1.0 1.1 0.5 3.1GLV -2.0
2024 Changeup SD R 55 88.8 35.0 3.8 17.1ARM 2.1 -0.1 5.0 17.1ARM 2.9
2024 4-Seam Fastball SD R 105 95.8 16.0 -1.4 5.9ARM -2.3 13.9 -1.9 5.9ARM -1.6
! 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 Sinker 0.1 0 323 40.5 85 .315 .356 .365 18.5 11.8 13.7 .272 .353 .334 57.1
2024 Cutter 0.3 0 154 19.3 43 .333 .452 .351 19.3 9.3 12.1 .268 .376 .289 15.8
2024 4-Seam Fastball 2.0 2 105 13.2 20 .200 .250 .198 27.0 45.0 17.0 .225 .255 .211 18.2
2024 Sweeper -5.4 -4 83 10.4 24 .364 .773 .494 25.7 25.0 18.8 .395 .779 .512 68.8
2024 Slider -2.0 -2 77 9.7 22 .273 .409 .295 25.7 22.7 16.7 .336 .560 .382 35.3
2024 Changeup 3.5 2 55 6.9 17 .250 .250 .253 15.4 29.4 19.2 .171 .182 .190 27.3
! 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 51 88.8 85 18.2 2:15 3:15 -60
2024 Cutter 149 92.4 39 7.2 12:30 11:45 45
2024 4-Seam Fastball 102 95.8 81 14.7 1:15 12:45 30
2024 Sinker 297 95.2 71 16.7 1:15 2:30 -75
2024 Slider 77 88.2 22 3.8 10:00 8:45 75
2024 Sweeper 81 83.7 65 17.7 7:45 8:30 -45
! Note: Years are in reverse order.
! Note: This table is showing data from the PITCHER perspective.
+ View Complete Spin Direction Leaderboard

Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
+ View Complete Arm Angle Leaderboard

Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2024 211 797 -5 9 -3 -3 -1
+ View Complete Swing/Take Leaderboard

Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2024 797 54.2 67.4 85.2 27.9 60.8 44.5 64.9 49.3 21.1 8.3 63.6
Player 797 54.2 67.4 85.2 27.9 60.8 44.5 64.9 49.3 21.1 8.3 63.6
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
2024 26 5 37 77 22 96 96 71 30 14 86 13 41 71 43 40
+ View Complete Percentile Rankings Leaderboard

Expected Home Runs

Adjusted

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2024 25.9 4 4.7 -1 2 3 2 50.0
Player 25.9 4 4.7 -1 2 3 2 50.0
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.
+ View Standard Expected Home Runs

Expected Home Runs by Park

Adjusted

Year HR
2024 4 4 4 6 5 5 5 4 4 4 5 6 6 4 5 5 5 4 4 5 4 5 6 5 4 4 5 5 5 4 4
Player 4 4 4 6 5 5 5 4 4 4 5 6 6 4 5 5 5 4 4 5 4 5 6 5 4 4 5 5 5 4 4
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.
+ View Standard Expected Home Runs By Park
+ View Complete Expected Home Runs Leaderboard

Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2024 Shades 207 .335 118 1 0.8 89 39 43.8
! 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 %
2024 173 14.9 52.0% 0.6% 176 18.1 8.0% 0.0%

+ View Complete Pitch Tempo Leaderboard

Pitch Distribution