USCF player statistics
Riordan, Omar
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+1 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- -39
- Mar 2026 to Apr 2026
- Longest rise
- —
- No consecutive gains yet
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±4
- Mean absolute change; spread ±13
Regular rating in context
United States
#72,270of 83,635 rated members · higher than 13.5%
11,315 lower · 51 same rating · 72,269 higher · ties share a rank
Illinois
#3,824of 4,678 rated members · higher than 18.1%
851 lower · 4 same rating · 3,823 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,049 within 100 points of 248 (this player included)
200–249: 2,417 members (2.8%) · highlighted band is the player’s · dashed line is the target
13.6% below 250 (11,415 of 83,635; 13.5% below 248)
How these comparisons are calculated
Chess67 calculations from the Sep 2026 monthly rating update, using the same population as the USCF statistics pages: US members classified as active in the published monthly records, excluding lifetime-coded records, provisional ratings included. Ties share a rank; “lower” is strictly lower; national and state groups overlap. The target explorer keeps the population fixed, with this player at their recorded rating: it is a rating comparison, not a prediction of future rank.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Regular | Quick |
|---|---|---|
| Sep 2026 | 248 Pno change · 9 games | 249 Pno change · 9 games |
| Aug 2026 | 248 Pno change · 9 games | 249 Pno change · 9 games |
| Jul 2026 | 248 Pno change · 9 games | 249 Pno change · 9 games |
| Jun 2026 | 248 Pno change · 9 games | 249 Pno change · 9 games |
| May 2026 | 248 Pno change · 9 games | 249 Pno change · 9 games |
| Apr 2026 | 248 P-39 · 9 games | 249 P-38 · 9 games |
| Mar 2026 | 287 Pno change · 4 games | 287 Pno change · 4 games |
| Feb 2026 | 287 P-1 · 4 games | 287 Pno change · 4 games |
| Jan 2026 | 288 Pno change · 4 games | 287 Pno change · 4 games |
| Dec 2025 | 288 P4 games | 287 P4 games |