USCF player statistics
Marchan, Sebastian
Official US Chess recordRegular rating
Published rating · Sep 2026 · 8 published updates since Feb 2026
Other formats against Regular
-7 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +165
- Jul 2026 to Aug 2026
- Biggest drop
- -21
- Aug 2026 to Sep 2026
- Longest rise
- 1 update
- +165 from Jul 2026 to Aug 2026
- Updates that moved
- 4 of 7
- Latest -21, Aug 2026 to Sep 2026
- Typical move
- ±30
- Mean absolute change; spread ±63.4
Regular rating in context
United States
#71,039of 83,635 rated members · higher than 14.9%
12,538 lower · 59 same rating · 71,038 higher · ties share a rank
California
#7,869of 9,051 rated members · higher than 12.9%
1,174 lower · 9 same rating · 7,868 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,183 within 100 points of 272 (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 272)
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 | 272-21 | 265-21 |
| Aug 2026 | 293 P+165 · 24 games | 286 P+158 · 24 games |
| Jul 2026 | 128 Pno change · 20 games | 128 Pno change · 20 games |
| Jun 2026 | 128 P+3 · 20 games | 128 P+3 · 20 games |
| May 2026 | 125 Pno change · 10 games | 125 Pno change · 10 games |
| Apr 2026 | 125 P+18 · 10 games | 125 P+18 · 10 games |
| Mar 2026 | 107 Pno change · 5 games | 107 Pno change · 5 games |
| Feb 2026 | 107 P5 games | 107 P5 games |
| Jan 2026 | — | — |