USCF player statistics
Castillo Lopez, Oslay
Official US Chess record- FIDE
- FIDE 3525503
Regular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- —
- No consecutive gains yet
- Current run
- 9 updates
- Unchanged since Dec 2025
- Typical move
- ±0
- Mean absolute change; spread ±0
Regular rating in context
United States
89.9%of the comparison population has a lower rating.
75,271 lower · 29 same rating · 8,335 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 5,683 within 100 points of 1,775
1,750–1,799: 1,186 members (1.4%) · highlighted band is the player’s · dashed line is the target
90.6% below 1,800 (75,823 of 83,635; 89.9% below 1,775)
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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Regular |
|---|---|
| Sep 2026 | 1,775 Pno change · 10 games |
| Aug 2026 | 1,775 Pno change · 10 games |
| Jul 2026 | 1,775 Pno change · 10 games |
| Jun 2026 | 1,775 Pno change · 10 games |
| May 2026 | 1,775 Pno change · 10 games |
| Apr 2026 | 1,775 Pno change · 10 games |
| Mar 2026 | 1,775 Pno change · 10 games |
| Feb 2026 | 1,775 Pno change · 10 games |
| Jan 2026 | 1,775 Pno change · 10 games |
| Dec 2025 | 1,775 P10 games |