Riley O'Brien
P
St. Louis Cardinals
+0.7
WAR
Age 31
RHP
6'4" / 180 lbs
MLB
Svc 1.0 · Ctrl thru 2030
peak 0.7 · 2026
ERA3.11
FIP3.80
xFIP1.64
SIERA0.92
K%24.6%
BB%10.0%
K-BB%14.6%
IP46
trajectory · 10 yrs
0.7peak
2026
K†6060
FB+5.8 (59%)
SL+0.8 (40%)
SI (59%)
Career (MLE) + Projections
Park-neutral MLB-equivalent. MiLB translated via MLE factors. FIP-based WAR vs replacement FIP=5.3 (SP) / 4.95 (RP, <80 IP). FIP+ = runs above league-avg FIP · REP = replacement-level bonus.
| Year | Age | Lvl | Team | G | GS | IP | BF | K | BB | HR | K% | BB% | HR% | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 22 | ROK | Princeton Rays | 11 | 10 | 41 | 159 | 40 | 17 | 1 | 17.1% | 13.4% | 0.9% | 2.20 | 3.83 | +0.5 |
| 2018 | 23 | A+ | Charlotte Stone Crabs | 25 | 13 | 88 | 357 | 103 | 41 | 4 | 21.7% | 13.4% | 1.5% | 2.75 | 3.77 | +1.4 |
| 2019 | 24 | AA | Montgomery Biscuits | 20 | 17 | 103 | 429 | 107 | 44 | 6 | 19.9% | 11.5% | 1.8% | 3.16 | 3.89 | +1.6 |
| 2021 | 26 | MLB | Cincinnati Reds | 24 | 23 | 114 | 499 | 123 | 57 | 18 | 21.7% | 11.6% | 3.3% | 4.66 | 4.53 | +1.0 |
| 2022 | 27 | MLB | Seattle Mariners | 34 | 1 | 41 | 201 | 48 | 31 | 5 | 21.1% | 16.1% | 2.5% | 6.86 | 4.75 | +0.1 |
| 2023 | 28 | AAA | Tacoma Rainiers | 51 | 3 | 55 | 228 | 86 | 30 | 2 | 33.2% | 13.8% | 0.9% | 2.29 | 2.52 | +1.5 |
| 2024 | 29 | MLB | St. Louis Cardinals | 22 | 0 | 21 | 98 | 20 | 13 | 2 | 15.2% | 10.1% | 0.0% | 5.06 | 3.09 | +0.4 |
| 2025 | 30 | MLB | St. Louis Cardinals | 61 | 0 | 67 | 285 | 77 | 28 | 3 | 25.7% | 10.0% | 1.2% | 2.27 | 2.86 | +1.6 |
| ▸ 2026 Season | ||||||||||||||||
| 2026 | 31 | MLB | St. Louis Cardinals | 10 | 0 | 10 | 35 | 11 | 0 | 0 | — | — | — | 0.00 | — | — |
| ROS | 31 | MLB | CIN | 36 | — | 36 | 152 | 41 | 15 | 3 | 26.9% | 10.0% | 2.0% | 3.05 | 3.60 | +0.6 |
| 2026 Total | 31 | MLB | CIN | — | — | 46 | 187 | 52 | 15 | 3 | 27.7% | 8.1% | 1.7% | 2.37 | 2.80 | +1.1 |
| ▸ 2027+ Projections — Marcel base + age-bracket aging | ||||||||||||||||
| 2027 | 32 | MLB | CIN | 44 | — | 44 | 188 | 50 | 17 | 4 | 26.5% | 9.2% | 2.1% | 3.30 | 3.57 | +0.7 |
| 2028 | 33 | MLB | CIN | 42 | — | 42 | 179 | 46 | 17 | 4 | 25.6% | 9.4% | 2.3% | 3.59 | 3.75 | +0.6 |
| 2029 | 34 | MLB | CIN | 40 | — | 40 | 171 | 42 | 16 | 4 | 24.8% | 9.6% | 2.4% | 3.80 | 3.92 | +0.5 |
| 2030 | 35 | MLB | CIN | 38 | — | 38 | 161 | 39 | 16 | 4 | 24.0% | 9.8% | 2.5% | 3.97 | 4.08 | +0.4 |
| 2031 | 36 | MLB | CIN | 36 | — | 36 | 150 | 35 | 15 | 4 | 23.3% | 10.1% | 2.6% | 4.13 | 4.24 | +0.3 |
| 2032 | 37 | MLB | CIN | 33 | — | 33 | 139 | 31 | 14 | 4 | 22.4% | 10.3% | 2.8% | 4.30 | 4.42 | +0.2 |
| 2033 | 38 | MLB | CIN | 30 | — | 30 | 128 | 28 | 14 | 4 | 21.6% | 10.7% | 2.9% | 4.48 | 4.60 | +0.1 |
| ▸ Career (all levels · actual + projected) | ||||||||||||||||
| Career | — | 258 | 67 | 541 | 2291 | 515 | 278 | 41 | 22.5% | 12.1% | 1.8% | 3.43 | 3.73 | +9.6 | ||
| / 200 IP | — | 95 | 25 | 200 | 847 | 191 | 103 | 15 | 22.5% | 12.1% | 1.8% | 3.43 | 3.73 | +3.6 | ||
Career Path Comps
What happened to similar pitchers from this age · Y-axis: ERA+ (100 = league avg, 150 = elite, 80 = below) · Bands: P10–P90 outer, P25–P75 inner · Gold: OGILVIE projection
| Profile at Match Age | Next 3 Yrs | Career | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comp | Age | Role | FIP | K% | BB% | HR/BF | BABIP | FIP | K% | K-BB% | IP | ΔFIP | Low FIP | IP | Match |
| Riley O'Brien (OGILVIE) | — | — | 3.60 | 26.9% | 10.0% | 2.0% | — | 3.74 | 25.7% | 16.3% | 127 | +0.14 | — | — | — |
| John Axford R 2027 · 3.28 FIP | 32 | SW | 3.28 | 24.8% | 11.2% | 1.6% | .333 | 3.94 | 21.5% | 11.1% | 141 | +0.66 | 3.28 | 197 | 82 |
| Hirokazu Sawamura R 2028 · 4.47 FIP | 33 | SW | 4.47 | 26.2% | 11.2% | 3.9% | .263 | 3.98 | 18.1% | 6.8% | 51 | -0.49 | 3.98 | 104 | 75 |
| Tom Wilhelmsen R 2026 · 3.11 FIP | 31 | SW | 3.11 | 22.5% | 9.7% | 1.2% | .298 | 5.81 | 13.8% | 4.1% | 86 | +2.70 | 3.11 | 148 | 72 |
| Oliver Drake R 2026 · 2.91 FIP | 31 | SU | 2.91 | 24.4% | 7.7% | 1.6% | .348 | 3.26 | 33.5% | 25.4% | 80 | +0.35 | 2.26 | 317 | 72 |
| Héctor Rondón R 2026 · 4.58 FIP | 31 | SW | 4.58 | 18.7% | 7.8% | 3.8% | .257 | 5.67 | 23.7% | 14.4% | 20 | +1.09 | 2.33 | 318 | 72 |
| Jake Petricka R 2026 · 3.04 FIP | 31 | SU | 3.04 | 23.4% | 7.7% | 1.7% | .323 | 4.02 | 18.8% | 10.8% | 60 | +0.98 | 3.04 | 252 | 71 |
| Mike Broadway R 2026 · 4.63 FIP | 31 | SU | 4.63 | 23.0% | 10.6% | 3.9% | .282 | — | — | — | — | — | 1.74 | 195 | 71 |
| Blake Wood R 2026 · 3.35 FIP | 31 | SW | 3.35 | 25.3% | 9.3% | 2.2% | .364 | — | — | — | — | — | 2.91 | 210 | 71 |
| Fernando Nieve R 2028 · 4.26 FIP | 33 | SU | 4.26 | 22.0% | 10.5% | 3.1% | .290 | 2.44 | 26.9% | 22.6% | 89 | -1.82 | 1.94 | 112 | 70 |
| Brandon Morrow R 2026 · 3.51 FIP | 31 | SU | 3.51 | 18.3% | 5.6% | 2.3% | .280 | 3.50 | 21.2% | 14.8% | 153 | -0.01 | 2.67 | 186 | 70 |
| Luis García R 2026 · 3.04 FIP | 31 | SU | 3.04 | 25.0% | 8.3% | 1.8% | .341 | 4.21 | 22.5% | 13.9% | 113 | +1.17 | 2.26 | 602 | 70 |
| Jonathan Broxton R 2026 · 3.73 FIP | 31 | SW | 3.73 | 24.5% | 8.2% | 3.0% | .325 | 3.80 | 21.7% | 13.5% | 76 | +0.07 | 3.65 | 137 | 70 |
| Brian Schlitter R 2025 · 3.31 FIP | 30 | SU | 3.31 | 20.6% | 10.8% | 1.1% | .333 | 3.78 | 14.4% | 6.6% | 110 | +0.47 | 3.31 | 244 | 69 |
| Ryan Cook R 2026 · 3.85 FIP | 31 | SW | 3.85 | 25.1% | 10.8% | 2.7% | .280 | — | — | — | — | — | 3.85 | 102 | 69 |
| Chad Gaudin R 2028 · 2.66 FIP | 33 | SU | 2.66 | 22.8% | 6.8% | 1.1% | .325 | 3.16 | 21.8% | 13.9% | 58 | +0.50 | 2.02 | 102 | 69 |
| Jeremy Jeffress R 2026 · 3.53 FIP | 31 | SW | 3.53 | 20.4% | 7.6% | 2.2% | .312 | 3.71 | 19.3% | 6.8% | 23 | +0.18 | 2.41 | 343 | 68 |
| Kevin Jepsen R 2026 · 3.46 FIP | 31 | SW | 3.46 | 20.7% | 9.1% | 1.7% | .241 | 5.68 | 16.9% | 7.2% | 90 | +2.22 | 3.46 | 160 | 68 |
| Ross Ohlendorf R 2027 · 3.33 FIP | 32 | SW | 3.33 | 23.7% | 7.2% | 2.4% | .342 | 4.98 | 23.4% | 12.7% | 66 | +1.65 | 3.33 | 122 | 68 |
| Carlos Fisher R 2027 · 3.45 FIP | 32 | SW | 3.45 | 22.6% | 11.6% | 1.4% | .236 | 3.18 | 22.5% | 11.1% | 91 | -0.27 | 2.48 | 147 | 68 |
| Robert Stock R 2026 · 4.16 FIP | 31 | SU | 4.16 | 23.0% | 8.5% | 3.5% | .301 | 7.43 | 14.7% | -1.9% | 23 | +3.27 | 2.91 | 334 | 67 |
Contract
ESTIMATED · service-time + WAR-based estimator (needs verification)
Status Pre-Arb
MLB Debut 2024
Service 1.750 yrs.days
Team Control Through 2030
First FA Year 2027
| Year | Status | Salary | Proj WAR | Value | Surplus |
| 2026 | Pre-Arb | $0.8M | +0.7 | $3M | +$2M |
| 2027 | Pre-Arb | $0.8M | +0.7 | $3M | +$2M |
| 2028 | Arb-1 | $2M | +0.6 | $3M | +$1M |
| 2029 | Arb-2 | $2M | +0.5 | $2M | +$0.1M |
| 2030 | Arb-3 | $2M | +0.4 | $2M | +$0.0M (cut) |
| Totals | $7M | $12M | +$5M | ||