USCF player statistics
Zheng, Sean
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- May 2026 to Jun 2026
- Biggest drop
- -1
- Jul 2026 to Aug 2026
- Longest rise
- 1 update
- +1 from May 2026 to Jun 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.5
Regular rating in context
United States
59.4%of the comparison population has a lower rating.
49,752 lower · 44 same rating · 33,839 higher
California
56.3%of the comparison population has a lower rating.
5,103 lower · 4 same rating · 3,944 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,919 within 100 points of 1,026
1,000–1,049: 1,959 members (2.3%) · highlighted band is the player’s · dashed line is the target
60.6% below 1,050 (50,700 of 83,635; 59.4% below 1,026)
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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Regular |
|---|---|
| Sep 2026 | 1,026 Pno change · 14 games |
| Aug 2026 | 1,026 P-1 · 14 games |
| Jul 2026 | 1,027 Pno change · 14 games |
| Jun 2026 | 1,027 P+1 · 14 games |
| May 2026 | 1,026 Pno change · 14 games |
| Apr 2026 | 1,026 Pno change · 14 games |
| Mar 2026 | 1,026 Pno change · 14 games |
| Feb 2026 | 1,026 Pno change · 14 games |
| Jan 2026 | 1,026 Pno change · 14 games |
| Dec 2025 | 1,026 P14 games |