Riley O'Brien - Bullpen Role & Save Probability

Riley O'Brien is currently the primary closer for the St. Louis Cardinals and profiles as one of their top save options.

Last updated:

Player Type

Relief Pitcher · St. Louis Cardinals

Bullpen Role

Closer

Usage Matrices

Sample: 2026-03-22 to 2026-04-20 (PT) · Total appearances: 11

Usage Matrix (%)

Outs Remaining<=-3-2-1tie+1+2+3>=4Total
10+---------
7–9-----9.1%--9.1%
5–6---------
4---9.1%1----9.1%
<=3---18.2%9.1%36.4%2 39.1%9.1%81.8%
Total---27.3%9.1%45.5%9.1%9.1%100.0%

Notes

¹ most recent appearance

² second most recent appearance

³ third most recent appearance

Usage Matrix (Apps)

Outs Remaining<=-3-2-1tie+1+2+3>=4Total
10+---------
7–9-----1--1
5–6---------
4---11----1
<=3---2142 3119
Total---3151111

Notes

¹ most recent appearance

² second most recent appearance

³ third most recent appearance

Save Probability Trend

Date (PT)Save ProbabilityModel Role (Historical)
2026-04-2125%Closer
2026-04-2025%Closer
2026-04-1920%Closer
2026-04-1822%Closer
2026-04-1723%Closer
2026-04-1526%Closer
2026-04-1423%Closer

Team Bullpen Context

PitcherRoleSave Probability
Riley O'BrienCloser25%
JoJo RomeroSetup3%
Ryne StanekSetup1%

Team page: St. Louis Cardinals Bullpen Hierarchy

Related Pages

Data provided by the Milo Save Probability Model.

Riley O'Brien Bullpen Role & Save Probability | Milo Stats