✗ UnlikelyRILEY
RILEY
O'Brien
St. Louis Cardinals·P·Age 31·5th Season
Last updated: March 28, 2026
HOF Score
11.1
/ 100
▲ +0 this season
SCORE Breakdown
5 DimensionsCareer Value30% weight
Milestone Progress25% weight
Awards & Selections20% weight
Peak Performance15% weight
Longevity10% weight
SCORE History
By Season221
222
524
1125
1126
2021HOF Score by Season2026 ★ 11
WAR BY Season
2026
2 GP
2025
42 GP
2024
8 GP
2022
1 GP
2021
1 GP
MILESTONE Tracker
HOF Comparisons
At Age 31| Player | WAR | W | ERA | Awards |
|---|---|---|---|---|
Riley O'Brien Active · 2026 | 0.0 | 4 | 3.410 | 0× MVP |
Willie Mays HOF · At age 30 | 56.8 | 0 | 0.00 | 2× MVP |
Hank Aaron HOF · At age 30 | 63.4 | 0 | 0.00 | 1× MVP |
Babe Ruth HOF · At age 30 | 91.8 | 0 | 0.00 | 1× MVP |
Ted Williams HOF · At age 30 | 62.4 | 0 | 0.00 | 2× MVP |
Mickey Mantle HOF · At age 30 | 71.2 | 0 | 0.00 | 3× MVP |
Ken Griffey Jr HOF · At age 30 | 62.8 | 0 | 0.00 | 1× MVP |
Derek Jeter HOF · At age 30 | 44.8 | 0 | 0.00 | 0× MVP |
Cal Ripken Jr HOF · At age 30 | 64.4 | 0 | 0.00 | 2× MVP |
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THE Verdict
O'Brien currently sits outside clear Hall of Fame consideration. An extended elite stretch — think multiple MVP-caliber seasons — would be needed to build a credible Cooperstown case.