USCF player statistics
Chiaverini, Duncan
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+6 Quick vs Regular (provisional)
No national baseline for this rating band yet.
-125 Blitz vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +53
- Jan 2026 to Feb 2026
- Biggest drop
- -1
- Jul 2026 to Aug 2026
- Longest rise
- 1 update
- +53 from Jan 2026 to Feb 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±6
- Mean absolute change; spread ±17.7
Regular rating in context
United States
#59,034of 83,635 rated members · higher than 29.3%
24,552 lower · 50 same rating · 59,033 higher · ties share a rank
Illinois
#2,922of 4,678 rated members · higher than 37.4%
1,753 lower · 4 same rating · 2,921 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,973 within 100 points of 496 (this player included)
450–499: 2,720 members (3.2%) · highlighted band is the player’s · dashed line is the target
29.6% below 500 (24,763 of 83,635; 29.3% below 496)
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 |
|---|---|---|---|
| Sep 2026 | 496 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Aug 2026 | 496 P-1 · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Jul 2026 | 497 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Jun 2026 | 497 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| May 2026 | 497 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Apr 2026 | 497 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Mar 2026 | 497 Pno change · 9 games | 502 Pno change · 9 games | 371 Pno change · 20 games |
| Feb 2026 | 497 P+53 · 9 games | 502 P+54 · 9 games | 371 Pno change · 20 games |
| Jan 2026 | 444 Pno change · 5 games | 448 Pno change · 5 games | 371 P20 games |
| Dec 2025 | 444 P5 games | 448 P5 games | — |