Trade Values › MLB › STL
Riley O'Brien
RP · 
STL · age 31
- Trade value
- $7.5M
- Likely range
- −$0.4M to $24.3M, where his value lands 8 or more times in 10
- Overall
- 48, potential 48
- Player value
- $14.6M over the next five seasons, contract aside
- Contract
- $0.80M a year, 4 years left
- Next season
- 0.2 WAR projected
- Role
- Bullpen Arm
- Style
- Contact Manager
- Awards
- All-Star 2026
Riley O'Brien's trade value is $7.5M: what his projected play is worth beyond his contract, summed over the deal and calibrated on real MLB trades.
Contract, season by season
| Season | Cap hit | Worth | Surplus |
|---|---|---|---|
| 2027 | $0.8M | $4.4M | $3.8M |
| 2028 | $2.6M | $3.5M | $2.1M |
| 2029 | $4.8M | $3.4M | $1.4M |
| 2030 | $6.3M | $2.4M | $0.5M |
Projection
| Season | WAR | 10–90% range | Plays |
|---|---|---|---|
| 2027 | 0.2 | −0.1 to 0.9 | 77% |
| 2028 | 0.1 | −0.1 to 0.6 | 57% |
| 2029 | 0.1 | −0.2 to 0.7 | 46% |
| 2030 | 0.1 | −0.1 to 0.5 | 33% |
| 2031 | 0.0 | −0.0 to 0.3 | 27% |
More STL
| JJ Wetherholt | $168.9M |
| Leo Bernal | $61.6M |
| Michael McGreevy | $42.8M |
| Quinn Mathews | $40.1M |
| Masyn Winn | $38.9M |
| Nathan Church | $31.6M |