Riley O'Brien

RHP

Team: St. Louis CardinalsThrows: RHeight: 6'4"Weight: 180 lbDOB: Feb 6, 1995Born: Seattle, WA, USAActive

Compare

Games

4.08

ERA

11.5%

K-BB%

97.7 mph

FB Velo

29.1%

CSW%

Stuff+

105

+5 vs MLB 100

vL 94▼vR 116▲

DLoc+

-21 vs MLB 100

vL 72▼vR 85▼

Stockyard PLoc+

-17 vs MLB 100

2026 Stockyard PLoc+ -> 2027

Pitching+

-1 vs MLB 100

vL 96vR 106▲

Synergy

120

Pitch Arsenal

Click a pitch to collapse or expand details

Sinker

58.5%|Pitching+106▲

PLoc+

79▼-> 2027

Velocity

97.7mph

Spin

2196rpm

CSW%

29.7%

iVB / iHB

4.7" / 16.1"

Stuff+

DLoc+

Pitching+

vs L

90▼

101

vs R

118▲

95▼

109▲

Grade drivers

League-average Sinker · 100 → 110.3

Break across arm slot

+7.0

Velocity

+6.5

Seam-shifted wake: amount

+4.0

Horizontal geometry

−3.3

Seam-shifted wake: direction

+1.4

Extension

+0.9

Everything else

−6.2

Sweeper

32.8%|Pitching+93▼

PLoc+

85▼-> 2027

Velocity

82.9mph

Spin

2318rpm

CSW%

30.1%

iVB / iHB

-4.4" / -14.6"

Stuff+

DLoc+

Pitching+

vs L

93▼

78▼

92▼

vs R

92▼

85▼

Grade drivers

League-average Sweeper · 100 → 88.4

Break across arm slot

−4.0

Horizontal geometry

−3.8

Velo gap vs fastball

+1.8

Vertical approach angle

−1.6

Velocity

−1.5

Seam-shifted wake: amount

−1.5

Everything else

−1.0

Slider

7.7%|Pitching+106▲

PLoc+

91▼-> 2027

Velocity

90.6mph

Spin

2445rpm

CSW%

24.4%

iVB / iHB

3.7" / -2.2"

Stuff+

DLoc+

Pitching+

vs L

104

107▲

vs R

108▲

93▼

104

Grade drivers

League-average Slider · 100 → 106.8

Velocity

+12.4

Horizontal geometry

−3.0

Arm angle

+2.6

Extension

+2.3

Velo gap vs fastball

−1.5

Carry along arm slot

−1.3

Everything else

−4.7

Changeup

0.9%|Pitching+103

PLoc+

85▼-> 2027

Velocity

90.9mph

Spin

1910rpm

CSW%

30%

iVB / iHB

3.9" / 15.3"

Stuff+

DLoc+

Pitching+

vs L

90▼

78▼

102

vs R

79▼

104

Grade drivers

League-average Changeup · 100 → 92.0

Vertical break gap vs fastball

−6.3

Seam-shifted wake: amount

+2.6

Horizontal geometry

−2.4

Velocity

+1.8

Vertical approach angle

−1.8

Carry along arm slot

+1.2

Everything else

−3.1

Pitch Out

0.1%|Pitching+—

Velocity

95.8mph

Spin

2298rpm

CSW%

iVB / iHB

2.9" / 17.8"

Stuff+

DLoc+

Pitching+

vs L

—

vs R

—

xRV (Expected Run Value): Expected runs per 100 pitches using xwOBA on batted balls (BABIP-neutral). Negative = good (runs prevented), Positive = bad (runs allowed).

Similar Pitchers

Last 30 games in 2026

Riley O'Brien

RHP

Team: St. Louis CardinalsThrows: RHeight: 6'4"Weight: 180 lbDOB: Feb 6, 1995Born: Seattle, WA, USAActive

Compare

Games

4.08

ERA

11.5%

K-BB%

97.7 mph

FB Velo

29.1%

CSW%

Stuff+

105

+5 vs MLB 100

vL 94▼vR 116▲

DLoc+

-21 vs MLB 100

vL 72▼vR 85▼

Stockyard PLoc+

-17 vs MLB 100

2026 Stockyard PLoc+ -> 2027

Pitching+

-1 vs MLB 100

vL 96vR 106▲

Synergy

120

Pitch Arsenal

Click a pitch to collapse or expand details

Sinker

58.5%|Pitching+106▲

PLoc+

79▼-> 2027

Velocity

97.7mph

Spin

2196rpm

CSW%

29.7%

iVB / iHB

4.7" / 16.1"

Stuff+

DLoc+

Pitching+

vs L

90▼

101

vs R

118▲

95▼

109▲

Grade drivers

League-average Sinker · 100 → 110.3

Break across arm slot

+7.0

Velocity

+6.5

Seam-shifted wake: amount

+4.0

Horizontal geometry

−3.3

Seam-shifted wake: direction

+1.4

Extension

+0.9

Everything else

−6.2

Sweeper

32.8%|Pitching+93▼

PLoc+

85▼-> 2027

Velocity

82.9mph

Spin

2318rpm

CSW%

30.1%

iVB / iHB

-4.4" / -14.6"

Stuff+

DLoc+

Pitching+

vs L

93▼

78▼

92▼

vs R

92▼

85▼

Grade drivers

League-average Sweeper · 100 → 88.4

Break across arm slot

−4.0

Horizontal geometry

−3.8

Velo gap vs fastball

+1.8

Vertical approach angle

−1.6

Velocity

−1.5

Seam-shifted wake: amount

−1.5

Everything else

−1.0

Slider

7.7%|Pitching+106▲

PLoc+

91▼-> 2027

Velocity

90.6mph

Spin

2445rpm

CSW%

24.4%

iVB / iHB

3.7" / -2.2"

Stuff+

DLoc+

Pitching+

vs L

104

107▲

vs R

108▲

93▼

104

Grade drivers

League-average Slider · 100 → 106.8

Velocity

+12.4

Horizontal geometry

−3.0

Arm angle

+2.6

Extension

+2.3

Velo gap vs fastball

−1.5

Carry along arm slot

−1.3

Everything else

−4.7

Changeup

0.9%|Pitching+103

PLoc+

85▼-> 2027

Velocity

90.9mph

Spin

1910rpm

CSW%

30%

iVB / iHB

3.9" / 15.3"

Stuff+

DLoc+

Pitching+

vs L

90▼

78▼

102

vs R

79▼

104

Grade drivers

League-average Changeup · 100 → 92.0

Vertical break gap vs fastball

−6.3

Seam-shifted wake: amount

+2.6

Horizontal geometry

−2.4

Velocity

+1.8

Vertical approach angle

−1.8

Carry along arm slot

+1.2

Everything else

−3.1

Pitch Out

0.1%|Pitching+—

Velocity

95.8mph

Spin

2298rpm

CSW%

iVB / iHB

2.9" / 17.8"

Stuff+

DLoc+

Pitching+

vs L

—

vs R

—

xRV (Expected Run Value): Expected runs per 100 pitches using xwOBA on batted balls (BABIP-neutral). Negative = good (runs prevented), Positive = bad (runs allowed).

Similar Pitchers

Last 30 games in 2026

Riley O'Brien

Pitch Arsenal

Sinker

Sweeper

Slider

Changeup

Pitch Out

Similar Pitchers

Game Log

Riley O'Brien

Pitch Arsenal

Sinker

Sweeper

Slider

Changeup

Pitch Out

Similar Pitchers

Game Log