USCF player statistics
Viveros, Ethan
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-71 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +33
- May 2026 to Jun 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +33 from May 2026 to Jun 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±4
- Mean absolute change; spread ±11
Regular rating in context
United States
#48,894of 83,635 rated members · higher than 41.4%
34,681 lower · 61 same rating · 48,893 higher · ties share a rank
Nevada
#411of 745 rated members · higher than 44.8%
334 lower · 1 same rating · 410 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 9,968 within 100 points of 688 (this player included)
650–699: 2,499 members (2.9%) · highlighted band is the player’s · dashed line is the target
42.2% below 700 (35,335 of 83,635; 41.4% below 688)
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 | 688 Pno change · 4 games | 617 Pno change · 4 games |
| Aug 2026 | 688 Pno change · 4 games | 617 Pno change · 4 games |
| Jul 2026 | 688 Pno change · 4 games | 617 Pno change · 4 games |
| Jun 2026 | 688 P+33 · 4 games | 617 P+22 · 4 games |
| May 2026 | 655 Pno change · 4 games | 595 Pno change · 4 games |
| Apr 2026 | 655 Pno change · 4 games | 595 Pno change · 4 games |
| Mar 2026 | 655 Pno change · 4 games | 595 Pno change · 4 games |
| Feb 2026 | 655 Pno change · 4 games | 595 Pno change · 4 games |
| Jan 2026 | 655 Pno change · 4 games | 595 Pno change · 4 games |
| Dec 2025 | 655 P4 games | 595 P4 games |