Riley OBrien
St. Louis Cardinals · RP
Throws:
R
Bats:
R
Height:
6'4
Weight:
180
Born:
Feb 06, 1995 (30)
Percentile Ranks
vs LHH
vs RHH K%
100.0
21.6 xWOBA
0.266 · 98%
0.316 · 58%
xSLG
100.0
87.1
vs LHH
vs RHH K%
100.0
21.6 xWOBA
0.266 · 98%
0.316 · 58%
xSLG
100.0
87.1
| Year | Team | G | GS | W-L | IP | ERA | WHIP | K% | CSW% | BB% | xAVG | xSLG | xwOBA | xISO | BAR% | SS% | HH% | GB% | LD% | FB% | Z% |
Z Sw% |
OZ% |
OZ Sw% |
Apr | May | Jun | Jul | Aug | Sep |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29 | 0 | 1-0 | 34.2 | 1.56 | 1.20 | 23.9% | 0.0% | 12.0% | .237 | .313 | .299 | .076 | 4.5% | 25.8% | 36% | 53% | 25% | 17% | 47% | 13% | 53% | 53% | 0.2 | 0.6 | 4.2 | 5.1 | 2.6 | 0.0 | |
| 2024 | 8 | 0 | 0-0 | 8.0 | 11.25 | 2.63 | 23.9% | 0.0% | 17.4% | .286 | .440 | .388 | .154 | 7.7% | 42.3% | 42% | 39% | 23% | 31% | 44% | 20% | 56% | 44% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| 2022 | 1 | 0 | 0-0 | 1.0 | 0.00 | 2.00 | 20.0% | 0.0% | 20.0% | .123 | .129 | .231 | .006 | 0.0% | 0.0% | 67% | 100% | 0% | 0% | 57% | 20% | 44% | 0% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2025 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Slider | Breaking | 90.0 MPH | 2532 | 31% | 100% | .164 | .205 | 42.1 | 10.5 | .190 | .063 | 0 | 98% | .276 | .320 | 17.6 | 11.8 | .345 | .067 | 0 |
| Changeup | Offspeed | MPH | 0% | 2% | .000 | .000 | 0.0 | 0.0 | .000 | .000 | 0 |
| 2024 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4-Seamer | Fastball | MPH | 0% | 11% | .966 | .893 | 0.0 | 0.0 | 1.059 | 1.000 | 0 | 4% | .000 | .000 | 100.0 | 0.0 | .000 | .000 | 0 | |
| Slider | Breaking | 89.8 MPH | 2431 | 32% | 89% | .295 | .374 | 25.0 | 0.0 | .591 | .625 | 1 | 96% | .371 | .589 | 16.7 | 33.3 | 1.106 | 1.000 | 1 |
| 2023 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|
| Splits | vs LHB | vs RHB | Year | PA | xBAVG | xWOBA | xSLG | ISO | K% | BB% | HR | PA | xBAVG | xWOBA | xSLG | ISO | K% | BB% | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 58 | .196 | .266 | .237 | .021 | 34.5% | 12.1% | 0 | 83 | .264 | .316 | .362 | .095 | 16.9% | 10.8% | 2 |
| 2024 | 20 | .326 | .442 | .505 | .400 | 20.0% | 20.0% | 1 | 26 | .258 | .347 | .394 | .190 | 26.9% | 15.4% | 1 |
| 2022 | 3 | .145 | .135 | .153 | .000 | 33.3% | 0.0% | 0 | 2 | .077 | .383 | .080 | .000 | 0.0% | 50.0% | 0 |
| 2021 | 5 | .467 | .791 | 1.865 | 1.500 | 20.0% | 60.0% | 1 | 4 | .250 | .000 | .502 | .400 | 25.0% | 0.3% | 1 |
| Home | Road | Season | PA | xAVG | xWOBA | K% | BB% | xSLG | ISO | HR | PA | xAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 74 | .258 | .291 | 23.0% | 8.1% | .339 | .060 | 1 | 67 | .211 | .301 | 25.4% | 14.9% | .281 | .073 | 1 |
| 2024 | 14 | .183 | .291 | 14.3% | 14.3% | .222 | .091 | 0 | 32 | .332 | .431 | 28.1% | 18.8% | .536 | .360 | 2 |
| 2022 | 5 | .128 | .234 | 20.0% | 20.0% | .135 | .000 | 0 | % | % | 0 |
| Split | Games | Wind 0-9 mph+ | Wind 10+ mph | Humid 0-25 | Humid 25-50 | Humid 50-75 | Humid 75-100 | Temp 0-40 | Temp 40-60 | Temp 61-79 | Temp 80+ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Road | 2.58 | 2.55 | 6.08 | 6.25 | 2.36 | -2.55 | 9.30 | 0.00 | 3.65 | 1.88 | 3.53 |
| Home | 3.42 | 3.07 | 4.35 | 0.00 | 3.54 | 2.12 | 5.40 | 0.00 | 0.75 | 3.27 | 3.80 |