USCF player statistics
Ackley, Donald S
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-99 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +29
- Jan 2026 to Feb 2026
- Biggest drop
- -12
- May 2026 to Jun 2026
- Longest rise
- 1 update
- +29 from Jan 2026 to Feb 2026
- Updates that moved
- 4 of 9
- Latest -12, Aug 2026 to Sep 2026
- Typical move
- ±7
- Mean absolute change; spread ±12.5
Regular rating in context
United States
#19,563of 83,635 rated members · higher than 76.5%
64,040 lower · 33 same rating · 19,562 higher · ties share a rank
Maryland
#450of 1,878 rated members · higher than 75.9%
1,427 lower · 2 same rating · 449 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,948 within 100 points of 1,428 (this player included)
1,400–1,449: 1,873 members (2.2%) · highlighted band is the player’s · dashed line is the target
77.4% below 1,450 (64,806 of 83,635; 76.5% below 1,428)
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 | 1,428-12 | 1,329-4 |
| Aug 2026 | 1,440no change | 1,333no change |
| Jul 2026 | 1,440+12 | 1,333+5 |
| Jun 2026 | 1,428-12 | 1,328-18 |
| May 2026 | 1,440no change | 1,346no change |
| Apr 2026 | 1,440no change | 1,346no change |
| Mar 2026 | 1,440no change | 1,346no change |
| Feb 2026 | 1,440+29 | 1,346+42 |
| Jan 2026 | 1,411no change | 1,304no change |
| Dec 2025 | 1,411 | 1,304 |