Riley O'Brien
Riley Chun-Young O'Brien
Born: February 6, 1995
Seattle, WA USA
Primary Position: P
All Position(s) Played: P
Bats: R
Throws: R
Height: 6'4"
Weight: 180
Career: 2021-2025
Draft: Round 8 (2017 June Amateur Draft, Tampa Bay Rays)
School: College of Idaho
Minor League Statistics
Riley O'Brien compiled a career batting average of with 0 home runs and 0 RBI in his 52-game career with the Cincinnati Reds, Seattle Mariners and St. Louis Cardinals. He began playing during the 2021 season and last took the field during the 2025 campaign.
Click on column headings to sort.
Pitching:
| Year | Lg | Team | W | L | W% | ERA | G | GS | GF | CG | SHO | SV | IP | H | R | ER | HR | BB | IBB | SO | HBP | BK | WP | BF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | NL | Cincinnati Reds | 0 | 1 | .000 | 13.50 | 1 | 1 | 0 | 0 | 0 | 0 | 1.3 | 2 | 2 | 2 | 2 | 3 | 0 | 2 | 0 | 0 | 0 | 9 |
| 2022 | AL | Seattle Mariners | 0 | 0 | 0.00 | 1 | 0 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 5 | |
| 2024 | NL | St. Louis Cardinals | 0 | 0 | 11.25 | 8 | 0 | 4 | 0 | 0 | 0 | 8.0 | 13 | 10 | 10 | 2 | 8 | 0 | 11 | 1 | 0 | 1 | 46 | |
| 2025 | NL | St. Louis Cardinals | 3 | 1 | .750 | 2.06 | 42 | 0 | 15 | 0 | 0 | 6 | 48.0 | 33 | 13 | 11 | 2 | 22 | 2 | 45 | 7 | 0 | 3 | 199 |
| Totals | 3 | 2 | .600 | 3.55 | 52 | 1 | 20 | 0 | 0 | 6 | 58.3 | 49 | 25 | 23 | 6 | 34 | 2 | 59 | 8 | 0 | 4 | 259 |
Batting:
| Year | Lg | Team | GP | PA | AB | R | H | 2B | 3B | HR | RBI | SB | CS | BB | SO | BA | OBP | SLG | OPS | TB | DP | HBP | SH | SF | IBB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | NL | Cincinnati Reds | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| 2022 | AL | Seattle Mariners | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| 2024 | NL | St. Louis Cardinals | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| Totals | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Fielding:
| Year | Lg | Team | Pos | GP | GS | Inn. | PO | A | E | DP | Fld% | RF/9 | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | NL | Cincinnati Reds | P | 1 | 1 | 1.3 | 0 | 0 | 0 | 0 | .000 | .000 | |
| 2022 | AL | Seattle Mariners | P | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | .000 | .000 | |
| 2024 | NL | St. Louis Cardinals | P | 8 | 0 | 8.0 | 0 | 0 | 0 | 0 | .000 | .000 | |
| 2025 | NL | St. Louis Cardinals | P | 42 | 0 | 48.0 | 5 | 8 | 0 | 1 | 1.000 | 2.437 | .310 |
| Totals | 52 | 1 | 58.3 | 5 | 8 | 0 | 1 | 1.000 | 2.006 | .250 |
Statistical data from Baseball Databank, made available under the Creative Commons Attribution-ShareAlike 3.0 Unported License
