USCF player statistics
Corbley, Sean
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-16 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +62
- Apr 2026 to May 2026
- Biggest drop
- -8
- May 2026 to Jun 2026
- Longest rise
- 1 update
- +62 from Apr 2026 to May 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±8
- Mean absolute change; spread ±21.2
Regular rating in context
United States
#31,422of 83,635 rated members · higher than 62.3%
52,184 lower · 30 same rating · 31,421 higher · ties share a rank
New Jersey
#1,262of 3,003 rated members · higher than 57.9%
1,740 lower · 2 same rating · 1,261 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,459 within 100 points of 1,090 (this player included)
1,050–1,099: 1,855 members (2.2%) · highlighted band is the player’s · dashed line is the target
62.8% below 1,100 (52,555 of 83,635; 62.3% below 1,090)
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 | 1,090 Pno change · 17 games | 1,074 Pno change · 17 games |
| Aug 2026 | 1,090 Pno change · 17 games | 1,074 Pno change · 17 games |
| Jul 2026 | 1,090 Pno change · 17 games | 1,074 Pno change · 17 games |
| Jun 2026 | 1,090 P-8 · 17 games | 1,074 P-14 · 17 games |
| May 2026 | 1,098 P+62 · 14 games | 1,088 P+64 · 14 games |
| Apr 2026 | 1,036 Pno change · 11 games | 1,024 Pno change · 11 games |
| Mar 2026 | 1,036 Pno change · 11 games | 1,024 Pno change · 11 games |
| Feb 2026 | 1,036 Pno change · 11 games | 1,024 Pno change · 11 games |
| Jan 2026 | 1,036 Pno change · 11 games | 1,024 Pno change · 11 games |
| Dec 2025 | 1,036 P11 games | 1,024 P11 games |