USCF player statistics
Dufek, Peter
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-20 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Jan 2026 to Feb 2026
- Biggest drop
- -74
- Dec 2025 to Jan 2026
- Longest rise
- 1 update
- +1 from Jan 2026 to Feb 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±19
- Mean absolute change; spread ±29.1
Regular rating in context
United States
#32,200of 83,635 rated members · higher than 61.4%
51,390 lower · 46 same rating · 32,199 higher · ties share a rank
Oregon
#481of 1,492 rated members · higher than 67.6%
1,010 lower · 2 same rating · 480 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,622 within 100 points of 1,069 (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; 61.4% below 1,069)
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 | 1,069no change | 1,049no change |
| Aug 2026 | 1,069no change | 1,049no change |
| Jul 2026 | 1,069no change | 1,049no change |
| Jun 2026 | 1,069-13 | 1,049-14 |
| May 2026 | 1,082no change | 1,063no change |
| Apr 2026 | 1,082-22 | 1,063-12 |
| Mar 2026 | 1,104-62 | 1,075-69 |
| Feb 2026 | 1,166+1 | 1,144no change |
| Jan 2026 | 1,165-74 | 1,144-78 |
| Dec 2025 | 1,239 | 1,222 |