USCF player statistics
Zafft, Dietrich
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Dec 2025
Other formats against Regular
+75 Quick vs Regular
No national baseline for this rating band yet.
+18 Blitz 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
- -45
- Feb 2026 to Mar 2026
- Longest rise
- —
- No consecutive gains yet
- Current run
- 6 updates
- Unchanged since Mar 2026
- Typical move
- ±6
- Mean absolute change; spread ±15.9
Regular rating in context
United States
#24,802of 83,635 rated members · higher than 70.3%
58,802 lower · 32 same rating · 24,801 higher · ties share a rank
Missouri
#447of 1,373 rated members · higher than 67.3%
925 lower · 2 same rating · 446 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,873 within 100 points of 1,278 (this player included)
1,250–1,299: 1,642 members (1.9%) · highlighted band is the player’s · dashed line is the target
71.1% below 1,300 (59,522 of 83,635; 70.3% below 1,278)
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 | 1,278 Pno change · 18 games | 1,353no change | 1,296no change |
| Aug 2026 | 1,278 Pno change · 18 games | 1,353no change | 1,296no change |
| Jul 2026 | 1,278 Pno change · 18 games | 1,353no change | 1,296no change |
| Jun 2026 | 1,278 Pno change · 18 games | 1,353+36 | 1,296-8 |
| May 2026 | 1,278 Pno change · 18 games | 1,317no change | 1,304-30 |
| Apr 2026 | 1,278 Pno change · 18 games | 1,317+50 | 1,334-8 |
| Mar 2026 | 1,278 P-45 · 18 games | 1,267 P+61 · 23 games | 1,342-12 |
| Feb 2026 | 1,323 Pno change · 18 games | 1,206 Pno change · 23 games | 1,354+113 |
| Dec 2025 | 1,323 P10 games | 1,206 P12 games | 1,241 P13 games |