USCF player statistics
Tam, Toby
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+1 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +143
- Jan 2026 to Feb 2026
- Biggest drop
- -1
- Feb 2026 to Mar 2026
- Longest rise
- 2 updates
- +19 from Mar 2026 to May 2026
- Current run
- 2 updates
- Unchanged since Jul 2026
- Typical move
- ±20
- Mean absolute change; spread ±46.8
Regular rating in context
United States
#51,371of 83,635 rated members · higher than 38.5%
32,214 lower · 51 same rating · 51,370 higher · ties share a rank
New York
#5,562of 9,415 rated members · higher than 40.8%
3,848 lower · 6 same rating · 5,561 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,311 within 100 points of 638 (this player included)
600–649: 2,641 members (3.1%) · highlighted band is the player’s · dashed line is the target
39.2% below 650 (32,836 of 83,635; 38.5% below 638)
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 | 638no change | 639no change |
| Aug 2026 | 638no change | 639no change |
| Jul 2026 | 638+17 | 639+21 |
| Jun 2026 | 621 Pno change · 24 games | 618 Pno change · 24 games |
| May 2026 | 621 P+18 · 24 games | 618 P+18 · 24 games |
| Apr 2026 | 603 P+1 · 18 games | 600 Pno change · 18 games |
| Mar 2026 | 602 P-1 · 18 games | 600 Pno change · 18 games |
| Feb 2026 | 603 P+143 · 18 games | 600 P+139 · 18 games |
| Jan 2026 | 460 Pno change · 9 games | 461 Pno change · 9 games |
| Dec 2025 | 460 P9 games | 461 P9 games |