Robert Stock
P | Bats/Throws: L/R | 6' 1" 260LBS | Age: 34
Draft: 2009 | Rd: 2, #67, St. Louis Cardinals | Southern California
W L ERA G GS SV IP SO WHIP
2019 1 0 10.13 10 0 0 10.2 15 2.06
2020 0 1 4.73 10 0 0 13.1 14 1.95
2021 0 2 8.00 3 3 0 9 9 2.11
4 Seasons 2 4 4.71 55 3 0 72.2 76 1.61
G W-L ERA IP SO WHIP
2019 10 1-0 10.13 10.2 15 2.06
2020 10 0-1 4.73 13.1 14 1.95
2021 3 0-2 8.00 9 9 2.11
4 Seasons 55 2-4 4.71 72.2 76 1.61
MLB Percentile Rankings
Pitch Distribution

  • â–¾

Statcast Statistics

Season Age Pitches Batted
Balls		 Barrels Barrel % Barrel/PA Exit
Velocity		 Max EV Launch
Angle		 Sweet
Spot %		 XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2018 28 609 113 2 1.8 1.2 86.7 109.7 13.0 24.8 .212 .286 .276 .258 .291 33.6 22.9 7.8 2.50 2.77
2019 29 229 32 3 9.4 5.4 91.6 112.3 8.5 40.6 .235 .430 .386 .345 .408 40.6 26.8 14.3 10.13 5.37
2020 30 253 38 2 5.3 3.2 92.4 108.6 6.9 39.5 .246 .345 .369 .332 .359 44.7 22.6 16.1 4.72 4.73
2021 31 168 26 4 15.4 8.9 91.3 114.8 11.1 34.6 .263 .500 .433 .404 .432 42.3 20.0 20.0 8.00 7.53
Player 1259 209 11 5.3 3.3 89.1 114.8 10.9 31.1 .228 .347 .334 .307 .339 37.8 23.1 12.2
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.1 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Stock relies on 5 pitches.
4-Seam Fastball
(61.3%) ,
Cutter
(13.1%) ,
Slider
(11.9%) ,
Changeup
(11.9%) ,
Curveball
(1.8%) ,


  • â–¾
  •   
    â–¾
  •   
    â–¾
  •   
    â–¾

+ If Available Pitches Click to Video.


  • â–¾
  •   
    â–¾
  •   
    â–¾
  •   
    â–¾
  •   
    â–¾
  •   
    â–¾
  •   
    â–¾

Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2018 51.3 22.1 17.7 8.8 31.0 34.5 34.5 6.2 41.6 28.3 19.5 2.7 1.8 1.2
2019 50.0 31.3 15.6 3.1 43.8 28.1 28.1 0.0 31.3 18.8 31.3 9.4 9.4 5.4
2020 52.6 5.3 34.2 7.9 21.1 44.7 34.2 2.6 36.8 21.1 28.9 5.3 5.3 3.2
2021 42.3 23.1 26.9 7.7 50.0 34.6 15.4 0.0 34.6 23.1 23.1 3.8 15.4 8.9
Player 50.2 20.6 21.5 7.7 33.5 35.4 31.1 3.8 38.3 24.9 23.4 4.3 5.3 3.3
MLB 44.6 23.5 24.9 7.0 37.0 37.6 25.3 3.9 32.8 24.7 24.4 5.8 6.9 4.7
! Note: All figures in this table cover the period 2015-present.

Pitch Movement

  • â–¾

How this works: Every pitch is affected by the forces of gravity, which means that every pitch drops on its way from the mound to the plate. These numbers are reported with gravity, which makes them larger and different than other pitch movement numbers you may have seen. Since gravity requires time, and slower pitches aren’t ‘better’ just because they have more time to move, the movement of a pitch is compared to ‘average’ movement by comparing it to other MLB pitch types within +/- 2 MPH and from within +/- 0.5 feet of extension and release.
Vertical Movement (inches) Horizontal Movement (inches)
Year Pitch Team Hand # MPH Inches of Drop vs Avg % vs Avg Inches of Break vs Avg % Break vs Avg
2021 Cutter NYM R 22 85.1 30.2 0.2 1 3.6 1.3 58
2021 Slider NYM R 20 82.4 39.4 -0.3 -1 10.6 2.9 38
2021 4-Seamer NYM R 103 96.2 16.5 -2.4 -17 11.4 3.0 37
2021 Curveball NYM R 3 77.8 56.5 2.3 4 11.0 0.0 0
2021 Changeup NYM R 20 82.9 31.9 -1.2 -4 15.1 1.2 8
2020 Slider BOS R 58 84.6 41.6 4.5 12 7.9 2.7 52
2020 4-Seamer BOS R 162 96.8 15.1 -1.2 -9 11.1 2.9 36
2020 Changeup BOS R 33 82.3 35.1 1.7 5 15.3 1.7 12
2019 Changeup SD R 19 84.9 29.9 -1.1 -4 14.6 0.7 5
2019 Slider SD R 86 82.8 41.5 1.8 5 14.5 7.5 108
2019 Sinker SD R 2 97.8 20.6 1.6 8 13.7 -1.3 -9
2019 4-Seamer SD R 122 97.9 15.5 -1.7 -12 10.1 1.6 19
2018 4-Seamer SD R 313 97.5 17.2 -2.8 -20 11.3 2.8 33
2018 Sinker SD R 46 97.6 21.4 2.2 11 14.5 -0.7 -5
2018 Changeup SD R 21 82.7 32.5 -1.4 -4 14.9 0.9 6
2018 Slider SD R 229 82.7 41.3 1.1 3 12.4 5.8 88
! Note: Years are in reverse order.
+ View Complete Pitch Movement Leaderboard

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 %
2021 4-Seamer -4.5 -5 103 61.3 28 .350 .700 .516 20.5 14.3 16.7 .336 .661 .498 50.0
2021 Cutter 11.6 3 22 13.1 6 .000 .000 .000 30.0 33.3 50.0 .017 .032 .021 25.0
2021 Changeup -4.9 -1 20 11.9 6 .250 1.000 .567 50.0 33.3 33.3 .170 .513 .421 50.0
2021 Slider 1.5 0 20 11.9 5 .400 .400 .360 30.0 20.0 20.0 .340 .404 .324 25.0
2021 Curveball -2.7 0 3 1.8 -- -- -- -- -- 0.0 -- -- -- --
2020 4-Seamer -2.9 -5 162 64.0 44 .361 .417 .409 23.0 22.7 24.4 .274 .390 .360 50.0
2020 Slider -0.5 0 58 22.9 12 .200 .300 .195 30.4 33.3 21.1 .138 .173 .172 37.5
2020 Changeup -0.8 0 33 13.0 6 .250 .500 .442 33.3 0.0 0.0 .272 .369 .424 25.0
2019 4-Seamer -4.2 -5 122 53.3 37 .333 .533 .458 18.5 16.2 21.4 .257 .437 .371 45.8
2019 Slider 0.0 0 86 37.6 14 .167 .417 .307 57.1 50.0 35.0 .154 .426 .298 20.0
2019 Changeup -2.2 0 19 8.3 5 .400 .400 .360 55.6 40.0 40.0 .300 .396 .293 33.3
2019 Sinker -2.1 0 2 0.9 -- -- -- -- -- 0.0 -- -- -- --
2018 4-Seamer -0.1 0 313 51.4 98 .299 .345 .337 16.6 11.2 15.7 .254 .345 .305 40.3
2018 Slider 2.0 5 229 37.6 48 .136 .205 .213 47.9 50.0 36.4 .132 .181 .183 20.0
2018 Sinker 2.3 1 46 7.6 16 .313 .375 .303 12.5 12.5 10.5 .230 .280 .227 21.4
2018 Changeup -0.3 0 21 3.4 3 .000 .000 .300 42.9 33.3 12.5 .081 .154 .103 0.0
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
+ View Complete Run Value Leaderboard

Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2021 Changeup 20 82.9 94 17.2 2:30 2:15 15
2021 Cutter 22 85.1 27 7.9 10:45 11:00 -15
2021 4-Seam Fastball 103 96.2 94 17.2 1:15 1:30 -15
2021 Slider 20 82.4 42 11.3 8:15 8:45 -30
2020 Changeup 29 82.2 95 16.8 2:45 2:30 15
2020 4-Seam Fastball 155 96.8 93 18.0 1:15 1:15 0
2020 Slider 56 84.7 40 10.2 8:45 8:00 45
â–¾
! Note: This table is showing data from the PITCHER perspective.
+ View Complete Spin Direction Leaderboard

Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2018 165 609 7 5 -3 -3 5
2019 56 229 0 0 -4 -1 -6
2020 62 253 3 -3 -3 -2 -5
2021 45 168 1 1 -3 -1 -3
+ 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 %
2018 609 51.7 62.2 81.1 22.1 50.8 43.3 63.0 42.9 25.7 6.4 76.9
2019 229 41.9 56.3 85.2 22.6 36.7 39.3 41.1 36.7 32.1 3.9 77.8
2020 253 45.1 71.1 84.0 18.0 44.0 37.9 53.2 41.9 25.5 7.5 73.7
2021 168 45.2 63.2 81.3 20.7 52.6 42.3 55.6 39.9 26.9 5.4 66.7
Player 1,259 47.7 63.1 82.3 21.1 46.8 41.4 56.4 41.1 26.8 6.0 75.0
MLB 48.6 67.0 82.0 28.5 58.0 42.6 60.9 47.1 24.8 7.3 76.1
! 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
2018 97 44 65
2019 98 37 55
2020 93 41 52
2021 88 11 60
+ View Complete Percentile Rankings Leaderboard

Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2018 25.1 1 1.1 0 2 0 1 100.0
2019 23.6 2 1.9 0 2 1 1 50.0
2020 -- 0 0.6 -1 1 1 0 --
2021 23.5 3 2.6 0 0 2 1 33.3
Player 23.8 6 6.2 0 5 4 3 50.0

Expected Home Runs by Park

Year HR
2018 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2019 2 2 2 2 2 2 2 2 2 1 2 2 2 2 2 1 1 1 2 2 2 3 2 3 1 1 2 2 2 2 2
2020 0 1 0 1 1 1 1 0 1 0 0 0 0 0 0 1 0 0 1 2 1 1 2 1 0 0 1 1 1 1 0
2021 3 3 3 3 2 2 3 3 1 2 2 2 3 3 3 3 3 3 3 2 3 2 3 3 3 3 3 3 3 2 2
Player 6 7 6 7 6 6 7 6 5 4 5 6 7 6 6 6 5 5 7 7 7 7 8 8 5 5 7 7 7 6 5
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights, distances and environmental effects. For these purposes, the 2020 Blue Jays home field was still Rogers Centre, not Sahlen Field.
+View Complete Expected Home Runs Leaderboard

Year to Year Changes

Metric 2018 2019 +/-   2020 +/-   2021 +/-  
Fastball Velocity 97.5 97.9 0.4 ↑ 96.8 -1.1 ↓ 94.2 -2.6 ↓
Offspeed Velocity 82.7 84.9 2.2 ↑ 82.3 -2.6 ↓ 82.9 0.6 ↑
Breaking Velocity 82.7 82.8 0.1 ↑ 84.6 1.8 ↑ 81.8 -2.8 ↓
Exit Velocity 86.7 91.6 4.9 ↑ 92.4 0.8 ↑ 91.3 -1.1 ↓
Launch Angle 13.0 8.5 -4.5 ↓ 6.9 -1.6 ↓ 11.1 4.2 ↑
Barrel % 1.8 9.4 7.6 ↑ 5.3 -4.1 ↓ 15.4 10.1 ↑
Hard Hit % 33.6 40.6 7.0 ↑ 44.7 4.1 ↑ 42.3 -2.4 ↓
Sweet Spot % 24.8 40.6 15.8 ↑ 39.5 -1.1 ↓ 34.6 -4.9 ↓
xBA .212 .235 0.023 ↑ .246 0.011 ↑ .263 0.017 ↑
BA .247 .298 0.051 ↑ .320 0.022 ↑ .286 -0.034 ↓
xwOBA .258 .345 0.087 ↑ .332 -0.013 ↓ .404 0.072 ↑
wOBA .276 .386 0.110 ↑ .369 -0.017 ↓ .433 0.064 ↑
xSLG .286 .430 0.144 ↑ .345 -0.085 ↓ .500 0.155 ↑
SLG .300 .489 0.189 ↑ .400 -0.089 ↓ .571 0.171 ↑
K% 22.9 26.8 3.9 ↑ 22.6 -4.2 ↓ 20.0 -2.6 ↓
BB% 7.8 14.3 6.5 ↑ 16.1 1.8 ↑ 20.0 3.9 ↑
Swing % 42.9 36.7 -6.2 ↓ 41.9 5.2 ↑ 39.9 -2.0 ↓
Whiff% 25.7 32.1 6.4 ↑ 25.5 -6.6 ↓ 26.9 1.4 ↑
In Zone % 51.7 41.9 -9.8 ↓ 45.1 3.2 ↑ 45.2 0.1 ↑
Out of Zone % 48.3 58.1 9.8 ↑ 54.9 -3.2 ↓ 54.8 -0.1 ↓
Out of Zone Swing % 22.1 22.6 0.5 ↑ 18.0 -4.6 ↓ 20.7 2.7 ↑
First Pitch Swing % 30.3 19.6 -10.7 ↓ 27.4 7.8 ↑ 20.0 -7.4 ↓
First Pitch Strike % 63.0 41.1 -21.9 ↓ 53.2 12.1 ↑ 55.6 2.4 ↑
+ View Complete Year to Year Changes Leaderboard

Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2018 Shifts 165 .276 90 2 2.2 75 10 13.3
2019 Shifts 56 .386 32 0 0.0 24 5 20.8
2020 Shifts 62 .369 32 0 0.0 30 8 26.7
2021 Shifts 45 .433 19 11 57.9 26 15 57.7
! 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 %
2018 171 15.7 40.4% 1.8% 126 20.7 1.6% 8.7%
2019 52 16.6 26.9% 0.0% 65 19.8 7.7% 1.5%
2020 66 17.1 10.6% 1.5% 59 19.3 1.7% 5.1%
2021 46 16.3 28.3% 2.2% 31 21.4 3.2% 6.5%
+ View Complete Pitch Tempo Leaderboard

Pitch Distribution

  • â–¾