| HT/WT | 6'4", 180 lbs |
| Age | 31 |
| Draft | 2017: Rd 8, Pk 4 (TB) |
| College | College of Idaho |
| Birthplace | Seattle, USA |
| Bat/throw | R/R |
| SV | ERA | WHIP | K |
|---|---|---|---|
| 4 | 0 | 0.48 | 30 |
Live and Upcoming
St. Louis Cardinals vs Cleveland Guardians
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals vs Cleveland Guardians
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals vs Cleveland Guardians
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals vs Cleveland Guardians
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
Cleveland Guardians at St. Louis Cardinals
MLBSt. Louis hosts Cleveland for a deciding finale in Missouri. As both teams eye early-season momentum, every run counts. Bo Naylor and the Guardians' young core look to challenge the Cardinals' rotation in a tactical battle of bullpen management.
Riley O Brien Stats
| Season | Team | GP | GS | W | L | ERA | WHIP | IP | K/BB | ER | SAVE | HLD | K | BB | H | TOTAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | STL | 8 | 0 | 1 | 0 | 0 | 0.48 | 8.1 | 0.0 | 0 | 4 | 1 | 30 | 0 | 4 | 1 |
| 2025 | STL | 42 | 0 | 3 | 1 | 2.063 | 1.15 | 48.0 | 2.0 | 11 | 6 | 6 | 212 | 20 | 33 | 13 |
| 2024 | STL | 8 | 0 | 0 | 0 | 11.25 | 2.62 | 8.0 | 1.4 | 10 | 0 | 0 | 52 | 8 | 13 | 10 |
| 2022 | SEA | 1 | 0 | 0 | 0 | 0 | 2.00 | 1.0 | 1.0 | 0 | 0 | 0 | 5 | 1 | 1 | 0 |
| 2021 | CIN | 1 | 1 | 0 | 1 | 13.5 | 3.75 | 1.1 | 0.7 | 2 | 0 | 0 | 11 | 3 | 2 | 2 |
| Career | 60 | 1 | 4 | 2 | 2.44 | 0.91 | 66.2 | 0.5 | 23 | 10 | 7 | 310 | 32 | 53 | 26 |
On Demand
St. Louis Cardinals vs Washington Nationals
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals vs New York Mets
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals vs New York Mets
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences