Search Pitcher

O'Brien, Riley

RHP

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

Games

1.26

ERA

25.5%

K-BB%

98.2 mph

FB Velo

29.3%

CSW%

Stuff+

107

vL 106▲vR 108▲

DLoc+

vL 91▼vR 94▼

Stockyard PLoc+

—

MLB season projection

Projects next-year DLoc+

Pitching+

106

vL 102vR 109▲

Deception

—

2024+ only

Synergy

—

Min. 40 IP

Mix+

—

Min. 40 IP

Match+

—

Min. 40 IP

Pitch Arsenal

Click a pitch to collapse or expand details

Sinker

58.5%|P+106▲

Velocity

98.2mph

Spin

2213rpm

CSW%

37%

iVB / iHB

5" / 17.3"

Stuff+

DLoc+

Pitching+

vs L

105▲

95▼

103

vs R

114▲

95▼

108▲

Sweeper

25.8%|P+101

Velocity

83.6mph

Spin

2434rpm

CSW%

17.9%

iVB / iHB

-3.7" / -17.1"

Stuff+

DLoc+

Pitching+

vs L

92▼

100

vs R

89▼

102

Slider

15.2%|P+100

Velocity

91.5mph

Spin

2486rpm

CSW%

21.2%

iVB / iHB

4.8" / -2.2"

Stuff+

DLoc+

Pitching+

vs L

106▲

vs R

105▲

100

Changeup

0.5%|P+—

Velocity

90.4mph

Spin

1809rpm

CSW%

iVB / iHB

6.5" / 16.1"

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

Game Log

Last 30 games in 2026

Search Pitcher

O'Brien, Riley

RHP

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

Games

1.26

ERA

25.5%

K-BB%

98.2 mph

FB Velo

29.3%

CSW%

Stuff+

107

vL 106▲vR 108▲

DLoc+

vL 91▼vR 94▼

Stockyard PLoc+

—

MLB season projection

Projects next-year DLoc+

Pitching+

106

vL 102vR 109▲

Deception

—

2024+ only

Synergy

—

Min. 40 IP

Mix+

—

Min. 40 IP

Match+

—

Min. 40 IP

Pitch Arsenal

Click a pitch to collapse or expand details

Sinker

58.5%|P+106▲

Velocity

98.2mph

Spin

2213rpm

CSW%

37%

iVB / iHB

5" / 17.3"

Stuff+

DLoc+

Pitching+

vs L

105▲

95▼

103

vs R

114▲

95▼

108▲

Sweeper

25.8%|P+101

Velocity

83.6mph

Spin

2434rpm

CSW%

17.9%

iVB / iHB

-3.7" / -17.1"

Stuff+

DLoc+

Pitching+

vs L

92▼

100

vs R

89▼

102

Slider

15.2%|P+100

Velocity

91.5mph

Spin

2486rpm

CSW%

21.2%

iVB / iHB

4.8" / -2.2"

Stuff+

DLoc+

Pitching+

vs L

106▲

vs R

105▲

100

Changeup

0.5%|P+—

Velocity

90.4mph

Spin

1809rpm

CSW%

iVB / iHB

6.5" / 16.1"

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).

Pitch Visualizations

Pitch Usage

Changeup 0.5%

Usage by Batter Hand

Movement Profile (Induced Break)

Pitching+ by Pitch TypeThe overall grade and per-pitch grades are rescaled independently against different populations. Per-pitch grades compare a pitcher's sinker to all sinkers, slider to all sliders, etc. The overall grade compares a pitcher's total pitch mix against all pitchers. Because averaging across pitch types reduces variance, the overall population is tighter — so the same raw advantage gets amplified more. A pitcher who is consistently above average on every pitch will have an overall grade higher than any individual pitch grade.

Arm Slot

Season Trends

Game-by-game performance across the season

Similar Pitchers

Game Log

Last 30 games in 2026

Pitch Visualizations

Pitch Usage

Changeup 0.5%

Usage by Batter Hand

Movement Profile (Induced Break)

Pitching+ by Pitch TypeThe overall grade and per-pitch grades are rescaled independently against different populations. Per-pitch grades compare a pitcher's sinker to all sinkers, slider to all sliders, etc. The overall grade compares a pitcher's total pitch mix against all pitchers. Because averaging across pitch types reduces variance, the overall population is tighter — so the same raw advantage gets amplified more. A pitcher who is consistently above average on every pitch will have an overall grade higher than any individual pitch grade.