USCF player statistics
Diaz, Ariel
Official US Chess record- FIDE
- FIDE 0
Regular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-5 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
- -1
- Aug 2026 to Sep 2026
- Longest rise
- 1 update
- +1 from Jul 2026 to Aug 2026
- Updates that moved
- 2 of 9
- Latest -1, Aug 2026 to Sep 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.5
Regular rating in context
United States
22.4%of the comparison population has a lower rating.
18,811 lower · 54 same rating · 64,770 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,858 within 100 points of 391
350–399: 2,689 members (3.2%) · highlighted band is the player’s · dashed line is the target
23% below 400 (19,308 of 83,635; 22.4% below 391)
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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.
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 | 391 P-1 · 8 games | 386 Pno change · 8 games |
| Aug 2026 | 392 P+1 · 8 games | 386 Pno change · 8 games |
| Jul 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Jun 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| May 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Apr 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Mar 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Feb 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Jan 2026 | 391 Pno change · 8 games | 386 Pno change · 8 games |
| Dec 2025 | 391 P8 games | 386 P8 games |