Riley O'Brien
P | Bats/Throws: R/R | 6' 4" 180LBS | Age: 29
Draft: 2017 | Rd: 8, #229, Tampa Bay Rays | College of Idaho
W L ERA G GS SV IP SO WHIP
2021 0 1 13.50 1 1 0 1.1 2 3.75
2022 0 0 0.00 1 0 0 1 1 2.00
2024 0 0 9.00 1 0 0 1 2 3.00
3 Seasons 0 1 8.10 3 1 0 3.1 5 3.00
G W-L ERA IP SO WHIP
2021 1 0-1 13.50 1.1 2 3.75
2022 1 0-0 0.00 1 1 2.00
2024 1 0-0 9.00 1 2 3.00
3 Seasons 3 0-1 8.10 3.1 5 3.00
MLB Percentile Rankings

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
2021 26 42 4 2 50.0 22.2 88.8 111.5 -9.5 50.0 .351 1.084 .676 .623 .883 50.0 22.2 33.3 13.50 28.66
2022 27 23 3 0 0.0 0.0 98.5 105.1 -23.0 0.0 .128 .135 .315 .234 .160 66.7 20.0 20.0 0.00 2.24
2024 29 28 2 0 0.0 0.0 89.4 90.4 22.6 100.0 .249 .302 .385 .395 .479 0.0 33.3 33.3 9.00 6.66
Player 93 9 2 22.2 10.0 92.2 111.5 -6.9 44.4 .258 .590 .499 .457 .552 44.4 25.0 30.0
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

O'Brien relies on 4 pitches.
Curveball
(42.9%) ,
Sinker
(25.0%) ,
Slider
(21.4%) ,
Four Seamer
(10.7%) ,


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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
2021 50.0 25.0 25.0 0.0 25.0 75.0 0.0 0.0 50.0 0.0 0.0 0.0 50.0 22.2
2022 100.0 0.0 0.0 0.0 0.0 100.0 0.0 0.0 100.0 0.0 0.0 0.0 0.0 0.0
2024 0.0 50.0 50.0 0.0 50.0 0.0 50.0 0.0 0.0 50.0 50.0 0.0 0.0 0.0
Player 55.6 22.2 22.2 0.0 22.2 66.7 11.1 0.0 55.6 11.1 11.1 0.0 22.2 10.0
MLB 44.6 23.5 24.8 7.0 37.0 37.5 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


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
2024 Sinker STL R 7 95.8 23.3 2.9 14 17.1 1.9 13
2024 4-Seam Fastball STL R 3 96.1 17.1 -4.0 -30 6.3 -1.0 -14
2024 Curveball STL R 12 82.9 43.6 -5.0 -10 14.6 6.8 88
2024 Slider STL R 6 90.4 27.7 -2.8 -9 1.6 -1.8 -53
2022 Curveball SEA R 12 78.1 54.1 -1.6 -3 17.0 7.8 84
2022 Cutter SEA R 11 92.4 14.7 7.6 34 5.6 -8.3 -304
2021 Changeup CIN R 9 88.1 28.3 1.4 5 12.6 -0.6 -4
2021 Curveball CIN R 10 79.1 51.9 -2.4 -4 14.2 5.6 64
2021 Cutter CIN R 23 91.9 16.1 4.8 23 5.9 -9.2 -277
! Note: Years are in reverse order.
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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 Curveball -13.6 -2 12 42.9 2 1.000 1.000 .800 25.0 0.0 0.0 .969 1.134 .807 0.0
2024 Sinker 3.7 0 7 25.0 2 .000 .000 .350 50.0 0.0 -- .026 .076 .371 0.0
2024 Slider 8.2 0 6 21.4 1 .000 .000 .000 66.7 100.0 50.0 -- -- .000 --
2024 4-Seam Fastball 12.8 0 3 10.7 1 .000 .000 .000 50.0 100.0 50.0 -- -- .000 --
2022 Curveball -0.7 0 12 52.2 2 .000 .000 .350 25.0 50.0 20.0 -- -- .350 --
2022 Cutter 4.6 1 11 47.8 3 .333 .333 .300 14.3 0.0 0.0 .171 .180 .160 66.7
2021 Cutter -10.2 -2 23 54.8 5 .667 2.667 1.080 14.3 0.0 0.0 .680 2.145 .972 66.7
2021 Curveball 4.6 0 10 23.8 2 .000 .000 .000 57.1 50.0 33.3 .032 .035 .035 0.0
2021 Changeup -0.4 0 9 21.4 2 .000 .000 .350 50.0 50.0 25.0 -- -- .350 --
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2024 Curveball 12 82.9 67 16.4 7:45 8:15 -30
2022 Curveball 12 78.1 72 21.2 7:15 8:00 -45
2022 Cutter 11 92.4 88 17.6 1:00 12:45 15
2021 Curveball 10 79.1 69 18.1 7:15 7:45 -30
2021 Cutter 23 91.9 90 16.7 1:00 12:45 15
! Note: This table is showing data from the PITCHER perspective.
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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 %
2021 42 33.3 71.4 90.0 28.6 25.0 33.3 66.7 42.9 38.9 4.8 50.0
2022 23 56.5 76.9 80.0 10.0 100.0 39.1 60.0 47.8 18.2 8.7 100.0
2024 28 50.0 71.4 60.0 7.1 0.0 28.6 50.0 39.3 45.5 10.7 100.0
Player 93 44.1 73.2 76.7 19.2 30.0 33.3 60.0 43.0 35.0 7.5 85.7
MLB 48.6 66.9 82.0 28.4 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.

Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2021 22.5 2 1.7 0 0 1 1 50.0
Player 22.5 2 1.7 0 0 1 1 50.0

Expected Home Runs by Park

Year HR
2021 2 2 2 1 1 2 2 1 1 1 1 1 2 2 2 2 2 2 2 1 2 2 2 2 2 2 1 2 2 2 2
Player 2 2 2 1 1 2 2 1 1 1 1 1 2 2 2 2 2 2 2 1 2 2 2 2 2 2 1 2 2 2 2
! 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.
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Year to Year Changes

Metric 2021 2022 +/-  
Fastball Velocity 91.9 92.4 0.5
Offspeed Velocity 88.1 0.0 0.0
Breaking Velocity 79.1 78.1 -1.0
Exit Velocity 88.8 98.5 9.7
Launch Angle -9.5 -23.0 -13.5
Barrel % 50.0 0.0 -50.0
Hard Hit % 50.0 66.7 16.7
Sweet Spot % 50.0 0.0 -50.0
xBA .351 .128 -0.223
BA .333 .250 -0.083
xwOBA .623 .234 -0.389
wOBA .676 .315 -0.361
xSLG 1.084 .135 -0.949
SLG 1.333 .250 -1.083
K% 22.2 20.0 -2.2
BB% 33.3 20.0 -13.3
Swing % 42.9 47.8 4.9
Whiff% 38.9 18.2 -20.7
In Zone % 33.3 56.5 23.2
Out of Zone % 66.7 43.5 -23.2
Out of Zone Swing % 28.6 10.0 -18.6
First Pitch Swing % 22.2 60.0 37.8
First Pitch Strike % 66.7 60.0 -6.7
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 9 .676 4 0 0.0 5 3 60.0
2022 Shifts 5 .315 2 1 50.0 3 3 100.0
2024 Shades 6 .385 3 0 0.0 3 3 100.0
! 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 %
2021 14 16.5 28.6% 0.0% 7 21.4 0.0% 0.0%
2022 9 16.1 22.2% 0.0% 2 16.9 0.0% 0.0%
2024 4 17.8 0.0% 0.0% 7 17.7 0.0% 0.0%
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