USCF player statistics
Rosmarin, Caleb
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-13 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
- Aug 2026 to Sep 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +1 from Aug 2026 to Sep 2026
- Updates that moved
- 1 of 9
- Latest +1, Aug 2026 to Sep 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.3
Regular rating in context
United States
46.6%of the comparison population has a lower rating.
39,027 lower · 44 same rating · 44,564 higher
New Jersey
41.1%of the comparison population has a lower rating.
1,237 lower · 0 same rating · 1,766 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 9,475 within 100 points of 778
750–799: 2,331 members (2.7%) · highlighted band is the player’s · dashed line is the target
47.8% below 800 (40,060 of 83,635; 46.6% below 778)
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 | Quick |
|---|---|---|
| Sep 2026 | 778 P+1 · 22 games | 765 Pno change · 22 games |
| Aug 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Jul 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Jun 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| May 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Apr 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Mar 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Feb 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Jan 2026 | 777 Pno change · 22 games | 765 Pno change · 22 games |
| Dec 2025 | 777 P22 games | 765 P22 games |