USCF player statistics
Lopez, Sebastian A
Official US Chess record- Biggest rank climb · #28 in Connecticut (Blitz)
- Top rated · #90 in Connecticut (Blitz)
- Top rated · #88 in Connecticut (Quick)
- FIDE
- FIDE 566016924
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-105 Quick vs Regular
No national baseline for this rating band yet.
-262 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +66
- Feb 2026 to Mar 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +106 from Feb 2026 to Apr 2026
- Current run
- 2 updates
- Unchanged since Jul 2026
- Typical move
- ±16
- Mean absolute change; spread ±25.6
Regular rating in context
United States
#7,038of 83,635 rated members · higher than 91.5%
76,575 lower · 23 same rating · 7,037 higher · ties share a rank
Connecticut
#117of 861 rated members · higher than 86.4%
744 lower · 1 same rating · 116 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 5,258 within 100 points of 1,817 (this player included)
1,800–1,849: 1,567 members (1.8%) · highlighted band is the player’s · dashed line is the target
92.5% below 1,850 (77,390 of 83,635; 91.5% below 1,817)
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 | 1,817no change | 1,712no change | 1,555no change |
| Aug 2026 | 1,817no change | 1,712no change | 1,555no change |
| Jul 2026 | 1,817+41 | 1,712+44 | 1,555-25 |
| Jun 2026 | 1,776no change | 1,668no change | 1,580no change |
| May 2026 | 1,776no change | 1,668no change | 1,580no change |
| Apr 2026 | 1,776+40 | 1,668+26 | 1,580no change |
| Mar 2026 | 1,736+66 | 1,642+73 | 1,580no change |
| Feb 2026 | 1,670no change | 1,569no change | 1,580no change |
| Jan 2026 | 1,670no change | 1,569no change | 1,580no change |
| Dec 2025 | 1,670 | 1,569 | 1,580 |