USCF player statistics
Li, Isabella
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-4 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +284
- Feb 2026 to Mar 2026
- Biggest drop
- -215
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +284 from Feb 2026 to Mar 2026
- Current run
- 2 updates
- Unchanged since Jul 2026
- Typical move
- ±106
- Mean absolute change; spread ±166.3
Regular rating in context
United States
#66,134of 83,635 rated members · higher than 20.8%
17,440 lower · 62 same rating · 66,133 higher · ties share a rank
California
#7,376of 9,051 rated members · higher than 18.4%
1,670 lower · 6 same rating · 7,375 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,704 within 100 points of 365 (this player included)
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; 20.8% below 365)
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 | 365no change | 361no change |
| Aug 2026 | 365no change | 361no change |
| Jul 2026 | 365-3 | 361+4 |
| Jun 2026 | 368+3 | 357+4 |
| May 2026 | 365-10 | 353-14 |
| Apr 2026 | 375-215 | 367-223 |
| Mar 2026 | 590+284 | 590+307 |
| Feb 2026 | 306-200 | 283-207 |
| Jan 2026 | 506+235 | 490+222 |
| Dec 2025 | 271 | 268 |