USCF player statistics
Zimmer, Jonah William
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Jan 2026
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
- 8 updates
- Unchanged since Jan 2026
- Typical move
- ±0
- Mean absolute change; spread ±0
Regular rating in context
Alabama
#274of 611 rated members · higher than 55.1%
337 lower · 1 same rating · 273 higher · ties share a rank
United States
#38,071of 83,635 rated members · higher than 54.4%
45,523 lower · 42 same rating · 38,070 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,530 within 100 points of 923 (this player included)
900–949: 2,108 members (2.5%) · highlighted band is the player’s · dashed line is the target
55.7% below 950 (46,667 of 83,635; 54.4% below 923)
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 |
|---|---|
| Sep 2026 | 923 Pno change · 7 games |
| Aug 2026 | 923 Pno change · 7 games |
| Jul 2026 | 923 Pno change · 7 games |
| Jun 2026 | 923 Pno change · 7 games |
| May 2026 | 923 Pno change · 7 games |
| Apr 2026 | 923 Pno change · 7 games |
| Mar 2026 | 923 Pno change · 7 games |
| Feb 2026 | 923 Pno change · 7 games |
| Jan 2026 | 923 P7 games |
| Dec 2025 | — |