USCF player statistics
Castillo, Ralston
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Jan 2026
Other formats against Regular
-12 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- May 2026 to Jun 2026
- Biggest drop
- -1
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +1 from May 2026 to Jun 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±1
- Mean absolute change; spread ±0.8
Regular rating in context
United States
#59,411of 83,635 rated members · higher than 28.9%
24,180 lower · 45 same rating · 59,410 higher · ties share a rank
New York
#6,495of 9,415 rated members · higher than 30.9%
2,915 lower · 6 same rating · 6,494 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,955 within 100 points of 489 (this player included)
450–499: 2,720 members (3.2%) · highlighted band is the player’s · dashed line is the target
29.6% below 500 (24,763 of 83,635; 28.9% below 489)
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 | 489 Pno change · 4 games | 477 Pno change · 4 games |
| Aug 2026 | 489 P+1 · 4 games | 477 Pno change · 4 games |
| Jul 2026 | 488 P-1 · 4 games | 477 Pno change · 4 games |
| Jun 2026 | 489 P+1 · 4 games | 477 Pno change · 4 games |
| May 2026 | 488 Pno change · 4 games | 477 Pno change · 4 games |
| Apr 2026 | 488 P-1 · 4 games | 477 Pno change · 4 games |
| Mar 2026 | 489 Pno change · 4 games | 477 Pno change · 4 games |
| Feb 2026 | 489 Pno change · 4 games | 477 Pno change · 4 games |
| Jan 2026 | 489 P4 games | 477 P4 games |
| Dec 2025 | — | — |