USCF player statistics
Roggenbaum, Abel J K
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-5 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- -145
- Dec 2025 to Jan 2026
- Longest rise
- —
- No consecutive gains yet
- Updates that moved
- 2 of 9
- Latest -1, Aug 2026 to Sep 2026
- Typical move
- ±16
- Mean absolute change; spread ±48.3
Regular rating in context
United States
#59,995of 83,635 rated members · higher than 28.1%
23,582 lower · 59 same rating · 59,994 higher · ties share a rank
Michigan
#1,346of 1,935 rated members · higher than 30.3%
587 lower · 3 same rating · 1,345 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,938 within 100 points of 478 (this player included)
450–499: 2,720 members (3.2%) · highlighted band is the player’s · dashed line is the target
29.6% below 500 (24,763 of 83,635; 28.1% below 478)
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 | 478 P-1 · 10 games | 473 Pno change · 10 games |
| Aug 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Jul 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Jun 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| May 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Apr 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Mar 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Feb 2026 | 479 Pno change · 10 games | 473 Pno change · 10 games |
| Jan 2026 | 479 P-145 · 10 games | 473 P-150 · 10 games |
| Dec 2025 | 624 P10 games | 623 P10 games |