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Riley O'Brien
Pitcher — St. Louis Cardinals
#61Height: 6'4"
As Pitcher
Challenges
21
Overturn Rate
33.3%
Overturned
7
Confirmed
14
Recent Challenges
| Date | Inning | Role | Opponent | Call | Result | Zone |
|---|---|---|---|---|---|---|
| 2026-08-07 | ▲ 9 | As Pitcher | Batter: Ezequiel Tovar(STL) | Ball → Ball | Confirmed | |
| 2026-08-02 | ▼ 9 | As Pitcher | Batter: Alejandro Kirk(TOR) | Strike → Strike | Confirmed | |
| 2026-08-02 | ▼ 9 | As Pitcher | Batter: George Springer(STL) | Ball → Ball | Confirmed | |
| 2026-07-30 | ▲ 9 | As Pitcher | Batter: Pete Crow-Armstrong(CHC) | Strike → Ball | Overturned | |
| 2026-07-20 | ▼ 9 | As Pitcher | Batter: Jo Adell(LAA) | Strike → Ball | Overturned | |
| 2026-07-20 | ▼ 9 | As Pitcher | Batter: Nolan Schanuel(STL) | Ball → Ball | Confirmed | |
| 2026-07-11 | ▲ 9 | As Pitcher | Batter: Joey Bart(ATL) | Strike → Strike | Confirmed | |
| 2026-07-10 | ▲ 9 | As Pitcher | Batter: Mauricio Dubón(STL) | Ball → Ball | Confirmed | |
| 2026-07-08 | ▲ 9 | As Pitcher | Batter: Garrett Mitchell(STL) | Ball → Ball | Confirmed | |
| 2026-06-28 | ▲ 9 | As Pitcher | Batter: Heriberto Hernández(MIA) | Strike → Strike | Confirmed | |
| 2026-06-13 | ▼ 9 | As Pitcher | Batter: Trevor Larnach(STL) | Ball → Ball | Confirmed | |
| 2026-06-06 | ▲ 9 | As Pitcher | Batter: Sal Stewart(STL) | Ball → Strike | Overturned | |
| 2026-06-06 | ▲ 9 | As Pitcher | Batter: Sal Stewart(CIN) | Strike → Ball | Overturned | |
| 2026-06-02 | ▲ 9 | As Pitcher | Batter: Nicky Lopez(TEX) | Strike → Strike | Confirmed | |
| 2026-05-14 | ▼ 9 | As Pitcher | Batter: Shea Langeliers(STL) | Ball → Strike | Overturned |
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