| 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 |
|---|---|---|---|
| 5 | 0 | 0.39 | 40 |
Live and Upcoming
Houston Astros vs St. Louis Cardinals
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
Houston Astros vs St. Louis Cardinals
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
Houston Astros vs St. Louis Cardinals
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
Houston Astros vs St. Louis Cardinals
MLBWatch America's pastime on its biggest stage as baseball's greatest stars swing for the fences
St. Louis Cardinals at Miami Marlins
MLBThe Marlins host the Cardinals for the opening game of a three-game series at loanDepot park. Third-place St. Louis (10-8) looks to build on a two-game winning streak, while a second-place Miami squad (9-10) aims to improve its 7-3 record at home.
Riley O Brien Stats
| Season | Team | GP | GS | W | L | ERA | WHIP | IP | K/BB | ER | SAVE | HLD | K | BB | H | TOTAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | STL | 10 | 0 | 2 | 0 | 0 | 0.39 | 10.1 | 0.0 | 0 | 5 | 1 | 40 | 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 | 62 | 1 | 5 | 2 | 2.44 | 0.90 | 68.2 | 0.5 | 23 | 11 | 7 | 320 | 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
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.