USCF player statistics
Santoyo, Sebastian Joaquin
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+14 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +77
- Dec 2025 to Jan 2026
- Biggest drop
- -26
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +77 from Dec 2025 to Jan 2026
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±13
- Mean absolute change; spread ±28.9
Regular rating in context
United States
#52,888of 83,635 rated members · higher than 36.7%
30,705 lower · 43 same rating · 52,887 higher · ties share a rank
Texas
#5,720of 10,810 rated members · higher than 47%
5,083 lower · 8 same rating · 5,719 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,561 within 100 points of 609 (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; 36.7% below 609)
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 | 609no change | 623no change |
| Aug 2026 | 609no change | 623no change |
| Jul 2026 | 609no change | 623no change |
| Jun 2026 | 609no change | 623no change |
| May 2026 | 609no change | 623no change |
| Apr 2026 | 609-26 | 623-23 |
| Mar 2026 | 635no change | 646no change |
| Feb 2026 | 635-15 | 646-14 |
| Jan 2026 | 650+77 | 660+72 |
| Dec 2025 | 573 P20 games | 588 P20 games |