Riley O'Brien
#61 P · B/T: R/R · 6' 4", 180 lb · Age 31 · Seattle, WA, USA · MLB debut 2021 · Draft: 2017 Rd 8 #229 (TB) — College of Idaho · Louisville Bats
Career Graph
Pitching
| Season | Team | W | L | SV | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | CIN | 0 | 1 | 0 | 1 | 1 | — | 1.1 | 1.3 | 2 | 13.5 | 20.3 | 13.50 | — | — |
| 2022 | SEA | 0 | 0 | 0 | 1 | 0 | — | 1.0 | 1.0 | 1 | 9.0 | 9.0 | 0.00 | — | — |
| 2024 | STL | 0 | 0 | 0 | 8 | 0 | — | 8.0 | 1.0 | 11 | 12.4 | 9.0 | 11.25 | — | — |
| 2025 | STL | 3 | 1 | 6 | 42 | 0 | — | 48.0 | 1.1 | 45 | 8.4 | 4.1 | 2.06 | — | — |
| 2026 | STL |
3
|
4
|
26
|
42
|
0
|
0
|
41.2
|
1.0
|
44
|
9.5
|
3.7
|
3.67
|
3.50
|
0.6
|
| 2026 pace | 5 | 6 | 39 | 63 | 0 | 63.0 | 66 | ||||||||
| Career | 6 | 6 | 32 | 94 | 1 | 0 | 100.0 | 1.1 | 103 | 9.3 | 4.6 | 3.60 | — | — |
| Season | Team | W | L | SV | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | |||||||||||||||
| 2021 | LOU | 7 | 7 | 0 | 23 | 22 | — | 112.2 | 4.9 | 121 | 9.7 | 4.4 | 4.55 | — | — |
| 2022 | TAC | 1 | 3 | 0 | 33 | 1 | — | 39.2 | 1.2 | 47 | 10.7 | 6.8 | 7.03 | — | — |
| 2023 | TAC | 2 | 5 | 15 | 51 | 3 | — | 55.0 | 1.1 | 86 | 14.1 | 5.1 | 2.29 | — | — |
| 2024 | MEM | 1 | 0 | 1 | 14 | 0 | — | 13.1 | 1.0 | 9 | 6.1 | 3.4 | 1.35 | — | — |
| 2025 | MEM | 1 | 0 | 3 | 19 | 0 | — | 19.1 | 1.0 | 32 | 14.9 | 3.7 | 2.79 | — | — |
| AAA Total | 12 | 15 | 19 | 140 | 26 | — | 240.0 | 1.7 | 295 | 11.1 | 4.8 | 4.13 | — | — | |
| Double-A (AA) | |||||||||||||||
| 2019 | MTG | 5 | 6 | 0 | 14 | 11 | — | 68.2 | 4.9 | 72 | 9.4 | 3.8 | 3.93 | — | — |
| AA Total | 5 | 6 | 0 | 14 | 11 | — | 68.2 | 4.9 | 72 | 9.4 | 3.8 | 3.93 | — | — | |
| High-A (A+) | |||||||||||||||
| 2018 | CHA | 4 | 3 | 0 | 10 | 8 | — | 40.0 | 4.0 | 37 | 8.3 | 4.7 | 3.60 | — | — |
| 2019 | CHA | 2 | 0 | 0 | 6 | 6 | — | 34.0 | 5.7 | 35 | 9.3 | 4.0 | 1.59 | — | — |
| A+ Total | 6 | 3 | 0 | 16 | 14 | — | 74.0 | 4.6 | 72 | 8.8 | 4.4 | 2.68 | — | — | |
| Single-A (A) | |||||||||||||||
| 2018 | BG | 4 | 1 | 0 | 15 | 5 | — | 48.1 | 3.2 | 66 | 12.3 | 3.9 | 2.05 | — | — |
| A Total | 4 | 1 | 0 | 15 | 5 | — | 48.1 | 3.2 | 66 | 12.3 | 3.9 | 2.05 | — | — | |
| Rookie (Rk) | |||||||||||||||
| 2017 | PRN | 1 | 0 | 0 | 11 | 10 | — | 41.0 | 3.7 | 40 | 8.8 | 3.7 | 2.20 | — | — |
| Rk Total | 1 | 0 | 0 | 11 | 10 | — | 41.0 | 3.7 | 40 | 8.8 | 3.7 | 2.20 | — | — | |
| Minors Total | 28 | 25 | 19 | 196 | 66 | — | 472.0 | 2.4 | 545 | 10.4 | 4.4 | 3.49 | — | — | |
Batting
| Season | Team | G | PA | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | BB% | K% | AVG | OBP | SLG | OPS | wOBA | wRC+ | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||||||||||||||||
| 2021 | LOU | 23 | 28 | 24 | 1 | 4 | 1 | 0 | 0 | 2 | 0 | 2 | 10 | 7.1% | 35.7% | .167 | .259 | .208 | .467 | — | — | — |
| AAA Total | 23 | 28 | 24 | 1 | 4 | 1 | 0 | 0 | 2 | 0 | 2 | 10 | 7.1% | 35.7% | .167 | .259 | .208 | .467 | — | — | — | |
| Single-A (A) | ||||||||||||||||||||||
| 2018 | BG | 15 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.0% | 100.0% | .000 | .000 | .000 | .000 | — | — | — |
| A Total | 15 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.0% | 100.0% | .000 | .000 | .000 | .000 | — | — | — | |
| Minors Total | 38 | 29 | 25 | 1 | 4 | 1 | 0 | 0 | 2 | 0 | 2 | 11 | 6.9% | 37.9% | .160 | .250 | .200 | .450 | — | — | — | |
Fielding
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| 2026 | STL |
P
|
42
|
41.2
|
6
|
8
|
0
|
1.000
|
| Career | P | 42 | 41.2 | 6 | 8 | 0 | 1.000 |
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||
| 2021 | LOU | P | 23 | 112.2 | 12 | 8 | 1 | .952 |
| 2022 | TAC | P | 33 | 39.2 | 3 | 4 | 0 | 1.000 |
| 2023 | TAC | P | 51 | 55.0 | 5 | 5 | 1 | .909 |
| 2024 | MEM | P | 14 | 13.1 | 2 | 1 | 1 | .750 |
| 2025 | MEM | P | 19 | 19.1 | 0 | 2 | 1 | .667 |
| AAA Total | — | 140 | 240.0 | 22 | 20 | 4 | .913 | |
| Double-A (AA) | ||||||||
| 2019 | MTG | P | 14 | 68.2 | 5 | 6 | 0 | 1.000 |
| AA Total | — | 14 | 68.2 | 5 | 6 | 0 | 1.000 | |
| High-A (A+) | ||||||||
| 2018 | CHA | P | 10 | 40.0 | 4 | 0 | 1 | .800 |
| 2019 | CHA | P | 6 | 34.0 | 1 | 5 | 1 | .857 |
| A+ Total | — | 16 | 74.0 | 5 | 5 | 2 | .833 | |
| Single-A (A) | ||||||||
| 2018 | BG | P | 15 | 48.1 | 6 | 2 | 1 | .889 |
| A Total | — | 15 | 48.1 | 6 | 2 | 1 | .889 | |
| Rookie (Rk) | ||||||||
| 2017 | PRN | P | 11 | 41.0 | 3 | 11 | 0 | 1.000 |
| Rk Total | — | 11 | 41.0 | 3 | 11 | 0 | 1.000 | |
| Minors Total | — | 196 | 472.0 | 41 | 44 | 7 | .924 | |
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