USCF player statistics
Keyster, Korben
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 9 published updates since Jan 2026
Other formats against Regular
+1 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +98
- Apr 2026 to May 2026
- Biggest drop
- -36
- Feb 2026 to Mar 2026
- Longest rise
- 1 update
- +98 from Apr 2026 to May 2026
- Current run
- 4 updates
- Unchanged since May 2026
- Typical move
- ±17
- Mean absolute change; spread ±38.6
Regular rating in context
United States
#49,998of 83,635 rated members · higher than 40.1%
33,600 lower · 38 same rating · 49,997 higher · ties share a rank
Illinois
#2,405of 4,678 rated members · higher than 48.5%
2,271 lower · 3 same rating · 2,404 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,120 within 100 points of 665 (this player included)
650–699: 2,499 members (2.9%) · highlighted band is the player’s · dashed line is the target
42.2% below 700 (35,335 of 83,635; 40.1% below 665)
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 | 665 Pno change · 19 games | 666 P+1 · 19 games |
| Aug 2026 | 665 Pno change · 19 games | 665 Pno change · 19 games |
| Jul 2026 | 665 Pno change · 19 games | 665 Pno change · 19 games |
| Jun 2026 | 665 Pno change · 19 games | 665 Pno change · 19 games |
| May 2026 | 665 P+98 · 19 games | 665 P+95 · 19 games |
| Apr 2026 | 567 Pno change · 14 games | 570 P+1 · 14 games |
| Mar 2026 | 567 P-36 · 14 games | 569 P-37 · 14 games |
| Feb 2026 | 603 P-1 · 14 games | 606 P-1 · 14 games |
| Jan 2026 | 604 P9 games | 607 P9 games |
| Dec 2025 | — | — |