USCF player statistics
Perko, Jonathan
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Jan 2026
Other formats against Regular
0 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +183
- Feb 2026 to Mar 2026
- Biggest drop
- -24
- Jan 2026 to Feb 2026
- Longest rise
- 1 update
- +183 from Feb 2026 to Mar 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±26
- Mean absolute change; spread ±66.6
Regular rating in context
United States
#70,047of 83,635 rated members · higher than 16.1%
13,537 lower · 52 same rating · 70,046 higher · ties share a rank
Illinois
#3,670of 4,678 rated members · higher than 21.4%
1,004 lower · 5 same rating · 3,669 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,274 within 100 points of 292 (this player included)
250–299: 2,532 members (3%) · highlighted band is the player’s · dashed line is the target
16.6% below 300 (13,947 of 83,635; 16.1% below 292)
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 | 292 Pno change · 18 games | 292 Pno change · 18 games |
| Aug 2026 | 292 P-3 · 18 games | 292 P-3 · 18 games |
| Jul 2026 | 295 Pno change · 18 games | 295 Pno change · 18 games |
| Jun 2026 | 295 Pno change · 18 games | 295 Pno change · 18 games |
| May 2026 | 295 Pno change · 18 games | 295 Pno change · 18 games |
| Apr 2026 | 295 Pno change · 18 games | 295 Pno change · 18 games |
| Mar 2026 | 295 P+183 · 18 games | 295 P+183 · 18 games |
| Feb 2026 | 112 P-24 · 18 games | 112 P-25 · 18 games |
| Jan 2026 | 136 P4 games | 137 P4 games |