USCF player statistics
Lobo-Guerrero, Sebastian
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-170 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +25
- Feb 2026 to Mar 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +48 from Feb 2026 to Apr 2026
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±5
- Mean absolute change; spread ±10.6
Regular rating in context
United States
#41,702of 83,635 rated members · higher than 50%
41,889 lower · 45 same rating · 41,701 higher · ties share a rank
Pennsylvania
#1,482of 2,639 rated members · higher than 43.8%
1,157 lower · 1 same rating · 1,481 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,986 within 100 points of 840 (this player included)
800–849: 2,310 members (2.7%) · highlighted band is the player’s · dashed line is the target
50.6% below 850 (42,370 of 83,635; 50% below 840)
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 | 840 Pno change · 24 games | 670 Pno change · 18 games |
| Aug 2026 | 840 Pno change · 24 games | 670 Pno change · 18 games |
| Jul 2026 | 840 Pno change · 24 games | 670 Pno change · 18 games |
| Jun 2026 | 840 Pno change · 24 games | 670 Pno change · 18 games |
| May 2026 | 840 Pno change · 24 games | 670 Pno change · 18 games |
| Apr 2026 | 840 P+23 · 24 games | 670 Pno change · 18 games |
| Mar 2026 | 817 P+25 · 23 games | 670 Pno change · 18 games |
| Feb 2026 | 792 Pno change · 23 games | 670 Pno change · 18 games |
| Jan 2026 | 792 Pno change · 22 games | 670 Pno change · 18 games |
| Dec 2025 | 792 P22 games | 670 P18 games |