USCF player statistics
Guillot, Zachary David
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Jan 2026
Other formats against Regular
-105 Quick vs Regular
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
- -85
- Jan 2026 to Feb 2026
- Longest rise
- —
- No consecutive gains yet
- Updates that moved
- 2 of 8
- Latest -3, Aug 2026 to Sep 2026
- Typical move
- ±11
- Mean absolute change; spread ±29.9
Regular rating in context
United States
#16,816of 83,635 rated members · higher than 79.8%
66,778 lower · 42 same rating · 16,815 higher · ties share a rank
Louisiana
#156of 700 rated members · higher than 77.5%
543 lower · 2 same rating · 155 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,821 within 100 points of 1,508 (this player included)
1,500–1,549: 1,925 members (2.3%) · highlighted band is the player’s · dashed line is the target
81.5% below 1,550 (68,205 of 83,635; 79.8% below 1,508)
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 | 1,508 P-3 · 13 games | 1,403+15 |
| Aug 2026 | 1,511 Pno change · 8 games | 1,388-19 |
| Jul 2026 | 1,511 Pno change · 8 games | 1,407 P+2 · 20 games |
| Jun 2026 | 1,511 Pno change · 8 games | 1,405 Pno change · 19 games |
| May 2026 | 1,511 Pno change · 8 games | 1,405 P+13 · 19 games |
| Apr 2026 | 1,511 Pno change · 8 games | 1,392 P-25 · 15 games |
| Mar 2026 | 1,511 Pno change · 7 games | 1,417 P-37 · 12 games |
| Feb 2026 | 1,511 P-85 · 7 games | 1,454 P-119 · 12 games |
| Jan 2026 | 1,596 P5 games | 1,573 P5 games |
| Dec 2025 | — | — |