USCF player statistics
Lahiri, Sampurna
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-67 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +154
- Feb 2026 to Mar 2026
- Biggest drop
- -42
- Jun 2026 to Jul 2026
- Longest rise
- 4 updates
- +409 from Feb 2026 to Jun 2026
- Current run
- 2 updates
- Unchanged since Jul 2026
- Typical move
- ±50
- Mean absolute change; spread ±63.9
Regular rating in context
United States
#59,125of 83,635 rated members · higher than 29.2%
24,461 lower · 50 same rating · 59,124 higher · ties share a rank
New York
#6,463of 9,415 rated members · higher than 31.2%
2,946 lower · 7 same rating · 6,462 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,977 within 100 points of 494 (this player included)
450–499: 2,720 members (3.2%) · highlighted band is the player’s · dashed line is the target
29.6% below 500 (24,763 of 83,635; 29.2% below 494)
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 | 494no change | 427no change |
| Aug 2026 | 494no change | 427no change |
| Jul 2026 | 494-42 | 427-2 |
| Jun 2026 | 536+96 | 429-10 |
| May 2026 | 440+82 | 439+81 |
| Apr 2026 | 358+77 | 358+76 |
| Mar 2026 | 281 P+154 · 21 games | 282 P+155 · 21 games |
| Feb 2026 | 127 P-3 · 21 games | 127 P-2 · 21 games |
| Jan 2026 | 130 Pno change · 14 games | 129 Pno change · 14 games |
| Dec 2025 | 130 P14 games | 129 P14 games |