| Riley O'Brien | |
|---|---|
.jpg) O'Brien with the Tacoma Rainiers in 2023 | |
| St. Louis Cardinals – No. 55 | |
| Pitcher | |
| Born: February 6, 1995 Seattle, Washington, U.S. | |
Bats: Right Throws: Right | |
| MLB debut | |
| September 28, 2021, for the Cincinnati Reds | |
| MLB statistics (through 2024 season) | |
| Win–loss record | 0–1 |
| Earned run average | 10.45 |
| Strikeouts | 14 |
| Teams | |
| |
Riley Chun-Young O'Brien (born February 6, 1995) is an American professional baseball pitcher for the St. Louis Cardinals of Major League Baseball (MLB). He has previously played in MLB for the Cincinnati Reds and Seattle Mariners. He made his MLB debut in 2021.