USCF player statistics
Vo, Phu Si
Official US Chess record- FIDE
- FIDE 39902382
- TD
- Club
- US Chess reported rank
- #5,540 national · #208 in state
- Floor
- Regular 1,700 · Quick 1,500 · Blitz 1,700
US Chess record as of Sep 15, 2026
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-93 Quick vs Regular
No national baseline for this rating band yet.
+40 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +23
- May 2026 to Jun 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +23 from May 2026 to Jun 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±4
- Mean absolute change; spread ±8.1
Regular rating in context
United States
#7,282of 83,635 rated members · higher than 91.2%
76,323 lower · 31 same rating · 7,281 higher · ties share a rank
Massachusetts
#279of 1,677 rated members · higher than 83.1%
1,395 lower · 4 same rating · 278 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 5,360 within 100 points of 1,809 (this player included)
1,800–1,849: 1,567 members (1.8%) · highlighted band is the player’s · dashed line is the target
92.5% below 1,850 (77,390 of 83,635; 91.2% below 1,809)
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 | 1,809no change | 1,716no change | 1,849-23 |
| Aug 2026 | 1,809+11 | 1,716-1 | 1,872no change |
| Jul 2026 | 1,798no change | 1,717no change | 1,872+27 |
| Jun 2026 | 1,798+23 | 1,717+14 | 1,845no change |
| May 2026 | 1,775no change | 1,703no change | 1,845no change |
| Apr 2026 | 1,775no change | 1,703-26 | 1,845-9 |
| Mar 2026 | 1,775no change | 1,729no change | 1,854no change |
| Feb 2026 | 1,775no change | 1,729+7 | 1,854no change |
| Jan 2026 | 1,775no change | 1,722no change | 1,854no change |
| Dec 2025 | 1,775 | 1,722 | 1,854 |