
#61 RP · Cardinals
Height
6'4"
Weight
180 lbs
Age
31
College
College of Idaho
Draft
2017, Rd 8, #229
Experience
4 yrs
Bats/Throws
R/R
Grade this player:
| Year | Team | GP | ERA | W-L | K | WHIP | IP | SV |
|---|---|---|---|---|---|---|---|---|
| Career | ![]() | 66 | 3.0963302 | 6-3 | 75 | 1.293578 | 0.0 | 13 |
Length
1 year
AAV
$780K/yr
Public perception of Riley O'Brien sits at a cautiously optimistic but tempered C+ — positive enough to acknowledge real upside, but not yet ready to fully commit given legitimate health questions hanging over his entry into 2026. The narrative driving that measured tone is a combination of genuine intrigue from his rookie campaign, where he embraced a closer's mindset and flashed the kind of late-inning potential that draws organizational investment, alongside real concern about the injury that knocked him out of WBC consideration for Korea and complicated his spring training timeline. That sentiment gap becomes particularly interesting when you stack it against his A- performance grade, which signals that when O'Brien is on the mound, the results are speaking loudly — including a recent scoreless appearance that sealed a Cardinals win and reinforced what the optimists see in him. The Cardinals' bullpen landscape is worth noting here: St. Louis has been active on the pitching market, adding arms at multiple roster levels over the past several weeks, which could either soften the urgency around O'Brien's durability concerns or quietly signal the organization is hedging its bets. As a fourth-year player with a modest salary profile still ascending in organizational value, O'Brien's ceiling narrative remains intact — but the narrative won't fully close the gap between his C+ public perception and his A- on-field production until he puts together a sustained, healthy stretch that quiets the durability doubts for good.
| Date | OPP | Result | AB | H | R | HR | RBI | BB | SO |
|---|---|---|---|---|---|---|---|---|---|
| Fri, 5/8 | @ SD | W 2-1 | - | - | - | 0 | - | - | - |
| Mon, 5/4 | vs MIL | W 6-3 | - | - | - | 0 | - | - | - |
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Riley O'Brien is a player in his 4th MLB season listed at RP for the Cardinals. FanVerdicts maintains four independent grades for every MLB player on an active roster — Contract Value Index for the deal itself, Performance for on-field production, Sentiment for media and fan reaction, and Fan Verdict for community voting. Current grades for Riley O'Brien: Contract Value Index pending, Performance A-, Sentiment C+, Fan Verdict pending.
Every grade refreshes on its own cadence as new data lands. Performance recalculates when MLB game stats post; Sentiment updates with new media coverage and fan discussion; Contract Value Index recomputes when contract terms change; Fan Verdict reflects live community voting on this profile. Contract details below show the structure (years, total value, average annual value, guarantees) the Contract Value Index grade is computed against.
For league-wide context, the MLB hub has team rankings, GM report cards, the transactions feed, and live scoreboards. The MLB player rankings page sorts every active player by performance and contract value within their position.
| Sat, 5/2 | vs LAD | W 3-2 | - | - | - | 0 | - | - | - |
| Wed, 4/29 | @ PIT | W 5-4 | - | - | - | 0 | - | - | - |