USCF player statistics
Cowperthwait, Jacob
Official US Chess recordQuick rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Dec 2025 to Jan 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +1 from Dec 2025 to Jan 2026
- Current run
- 8 updates
- Unchanged since Jan 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.3
Quick rating in context
United States
#23,177of 79,019 rated members · higher than 70.6%
55,805 lower · 38 same rating · 23,176 higher · ties share a rank
New Jersey
#923of 2,810 rated members · higher than 67%
1,885 lower · 3 same rating · 922 higher · ties share a rank
Where this rating sits · United States
79,019 rated members in 50-point bands · median 750–799 · 7,622 within 100 points of 1,139 (this player included)
1,100–1,149: 1,887 members (2.3%) · highlighted band is the player’s · dashed line is the target
71.1% below 1,150 (56,230 of 79,019; 70.6% below 1,139)
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 | Quick |
|---|---|
| Sep 2026 | 1,139 Pno change · 20 games |
| Aug 2026 | 1,139 Pno change · 20 games |
| Jul 2026 | 1,139 Pno change · 20 games |
| Jun 2026 | 1,139 Pno change · 20 games |
| May 2026 | 1,139 Pno change · 20 games |
| Apr 2026 | 1,139 Pno change · 20 games |
| Mar 2026 | 1,139 Pno change · 20 games |
| Feb 2026 | 1,139 Pno change · 20 games |
| Jan 2026 | 1,139 P+1 · 20 games |
| Dec 2025 | 1,138 P20 games |