USCF player statistics
Foster, Isaac
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-2 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +21
- Jul 2026 to Aug 2026
- Biggest drop
- -46
- Dec 2025 to Jan 2026
- Longest rise
- 1 update
- +21 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±12
- Mean absolute change; spread ±20.9
Regular rating in context
United States
#71,098of 83,635 rated members · higher than 14.9%
12,485 lower · 53 same rating · 71,097 higher · ties share a rank
Ohio
#2,118of 2,416 rated members · higher than 12.2%
297 lower · 2 same rating · 2,117 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,177 within 100 points of 271 (this player included)
250–299: 2,532 members (3%) · highlighted band is the player’s · dashed line is the target
16.6% below 300 (13,947 of 83,635; 14.9% below 271)
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 | 271no change | 269+1 |
| Aug 2026 | 271+21 | 268+20 |
| Jul 2026 | 250-37 | 248-36 |
| Jun 2026 | 287no change | 284no change |
| May 2026 | 287no change | 284no change |
| Apr 2026 | 287no change | 284no change |
| Mar 2026 | 287no change | 284no change |
| Feb 2026 | 287no change | 284no change |
| Jan 2026 | 287-46 | 284-46 |
| Dec 2025 | 333 | 330 |