USCF player statistics
Chu, Stephen Chengjun
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+83 Quick vs Regular
No national baseline for this rating band yet.
-42 Blitz vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +188
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 3 updates
- +218 from Jun 2026 to Sep 2026
- Updates that moved
- 3 of 9
- Latest +13, Aug 2026 to Sep 2026
- Typical move
- ±24
- Mean absolute change; spread ±61.8
Regular rating in context
United States
#43,291of 83,635 rated members · higher than 48.1%
40,295 lower · 50 same rating · 43,290 higher · ties share a rank
California
#4,974of 9,051 rated members · higher than 44.9%
4,069 lower · 9 same rating · 4,973 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 9,196 within 100 points of 805 (this player included)
800–849: 2,310 members (2.7%) · highlighted band is the player’s · dashed line is the target
50.6% below 850 (42,370 of 83,635; 48.1% below 805)
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 | 805+13 | 888+109 | 763 P+137 · 23 games |
| Aug 2026 | 792+188 | 779+180 | 626 Pno change · 13 games |
| Jul 2026 | 604 P+17 · 21 games | 599 P+18 · 21 games | 626 Pno change · 13 games |
| Jun 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| May 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| Apr 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| Mar 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| Feb 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| Jan 2026 | 587 Pno change · 18 games | 581 Pno change · 18 games | 626 Pno change · 13 games |
| Dec 2025 | 587 P18 games | 581 P18 games | 626 P13 games |