USCF player statistics
Bach, Viet
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 8 published updates since Feb 2026
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
- +142
- Mar 2026 to Apr 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +143 from Mar 2026 to May 2026
- Current run
- 4 updates
- Unchanged since May 2026
- Typical move
- ±20
- Mean absolute change; spread ±53.6
Regular rating in context
United States
#60,176of 83,635 rated members · higher than 27.9%
23,398 lower · 62 same rating · 60,175 higher · ties share a rank
Illinois
#3,003of 4,678 rated members · higher than 35.7%
1,671 lower · 5 same rating · 3,002 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,944 within 100 points of 475 (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; 27.9% below 475)
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 | 475 Pno change · 12 games | 470 Pno change · 12 games |
| Aug 2026 | 475 Pno change · 12 games | 470 Pno change · 12 games |
| Jul 2026 | 475 Pno change · 12 games | 470 Pno change · 12 games |
| Jun 2026 | 475 Pno change · 12 games | 470 Pno change · 12 games |
| May 2026 | 475 P+1 · 12 games | 470 Pno change · 12 games |
| Apr 2026 | 474 P+142 · 12 games | 470 P+142 · 12 games |
| Mar 2026 | 332 Pno change · 5 games | 328 Pno change · 5 games |
| Feb 2026 | 332 P5 games | 328 P5 games |
| Jan 2026 | — | — |