St. Louis Cardinals#61 · RP
Riley O'Brien
Age 31
Contract Value $795,050/yr
Size 6' 4" · 180
Throws RHP
Bats Right
From Seattle, WA
3–9
W-L
4.08
ERA
1.28
WHIP
64
K
64.0
IP
0
GS
P-Score
P-Score not yet available
Stats updated Oct 22, 1:05 PM ET
Season overview
How good is he?
StatPlayerMLB AvgPercentile
Run Prevention5750AVERAGE
Skill5350AVERAGE
Workload3450WEAK
Consistency5050AVERAGE
Form5050AVERAGE
Contact Management4950BELOW AVG
Game log
Pitch arsenal (2026)
Usage %Velocity
- Sinker58.9%97.8 mph
- Sweeper32.0%82.9 mph
- Slider8.0%90.6 mph
- Changeup1.1%90.9 mph
Hot / cold zones (vs RHB)
.400.133.250.476.161.294.125.182.188
- Better than MLB avg
- Similar to MLB avg
- Worse than MLB avg
Splits
vs handedness
vs LHH
.671
vs RHH
.651
.020 OPS better vs RHH
Career
Frequently asked
What is Riley O'Brien's ERA in 2026?+
4.08 across 0 starts and 64.0 innings, with a 1.28 WHIP and a 3.63 FIP.
When is his next start?+
No probable start has been announced.
What pitches does he throw?+
He throws sinker (58.9% at 97.8 mph mph), sweeper (32.0% at 82.9 mph mph), slider (8.0% at 90.6 mph mph), changeup (1.1% at 90.9 mph mph).
What is his P-Score?+
P-Score is not yet available for this pitcher.
How has he pitched in his last five starts?+
Fewer than three starts are available, so a last-five comparison is not shown.