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
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
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 .247 .346 .369 .333 .360 44.7 22.6 16.1 4.72 4.77
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 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

Stock relies on 5 pitches.
Four Seamer
(61.3%) ,
Cutter
(13.1%) ,
Changeup
(11.9%) ,
Slider
(11.9%) ,
Curveball
(1.8%) ,


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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 44.4 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

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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
2021 Cutter NYM R 22 85.1 30.2 0.2 3.6GLV 1.3 7.7 -0.3 3.6GLV 0.7
2021 Curveball NYM R 3 77.8 56.5 2.3 11.0GLV 0.0 -11.0 0.9 11.0GLV 1.8
2021 4-Seam Fastball NYM R 103 96.2 16.5 -2.4 11.4ARM 3.0 13.1 -3.1 11.4ARM 4.2
2021 Slider NYM R 20 82.4 39.4 -0.2 10.6GLV 3.2 0.7 1.1 10.6GLV 4.9
2021 Changeup NYM R 20 82.9 31.9 -1.2 15.1ARM 1.2 8.0 -1.7 15.1ARM 1.2
2020 Slider BOS R 58 84.6 41.6 4.5 7.9GLV 2.7 -3.6 5.0 7.9GLV 2.6
2020 4-Seam Fastball BOS R 162 96.8 15.1 -1.2 11.1ARM 2.9 14.2 -1.8 11.1ARM 3.8
2020 Changeup BOS R 33 82.3 35.1 1.7 15.3ARM 1.7 5.4 1.0 15.3ARM 1.9
! 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 %
2021 4-Seam Fastball -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 Slider 1.5 0 20 11.9 5 .400 .400 .360 30.0 20.0 20.0 .340 .404 .324 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 Curveball -2.7 0 3 1.8 -- -- -- -- -- 0.0 -- -- -- --
2020 4-Seam Fastball -2.9 -5 162 64.0 44 .361 .417 .409 23.0 22.7 24.4 .274 .391 .361 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
! 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
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
! 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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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
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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 %
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 48.7 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
2018 97 44 65
2019 98 37 56
2020 93 41 52
2021 87 11 60
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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 %
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
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.
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Expected Home Runs by Park

Adjusted
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: 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.
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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 ↓
LA Sweet-Spot % 24.8 40.6 15.8 ↑ 39.5 -1.1 ↓ 34.6 -4.9 ↓
xBA .212 .235 0.023 ↑ .247 0.012 ↑ .263 0.016 ↑
BA .247 .298 0.051 ↑ .320 0.022 ↑ .286 -0.034 ↓
xwOBA .258 .345 0.087 ↑ .333 -0.012 ↓ .404 0.071 ↑
wOBA .276 .386 0.110 ↑ .369 -0.017 ↓ .433 0.064 ↑
xSLG .286 .430 0.144 ↑ .346 -0.084 ↓ .500 0.154 ↑
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 ↑
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2018 Shifts 165 .276 90 0 0.0 75 9 12.0
2019 Shifts 56 .386 32 0 0.0 24 5 20.8
2020 Shifts 62 .369 32 0 0.0 30 7 23.3
2021 Shifts 45 .433 19 9 47.4 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%

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Pitch Distribution

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