USCF player statistics
Kaplan, William Ervin
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-6 Quick vs Regular
No national baseline for this rating band yet.
-391 Blitz vs Regular (provisional)
No national baseline for this rating band yet.
-65 Online Regular vs Regular (provisional)
No national baseline for this rating band yet.
-179 Online Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +1 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.3
Regular rating in context
United States
#55,274of 83,635 rated members · higher than 33.8%
28,303 lower · 59 same rating · 55,273 higher · ties share a rank
Maine
#256of 405 rated members · higher than 36.7%
149 lower · 1 same rating · 255 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,809 within 100 points of 564 (this player included)
550–599: 2,691 members (3.2%) · highlighted band is the player’s · dashed line is the target
36.1% below 600 (30,195 of 83,635; 33.8% below 564)
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 | Blitz | Online Regular | Online Quick |
|---|---|---|---|---|---|
| Sep 2026 | 564no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Aug 2026 | 564+1 | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Jul 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Jun 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| May 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Apr 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Mar 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Feb 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Jan 2026 | 563no change | 558no change | 173 Pno change · 17 games | 499 Pno change · 13 games | 385 Pno change · 14 games |
| Dec 2025 | 563 | 558 | 173 P17 games | 499 P13 games | 385 P14 games |