USCF player statistics
Mapperson, Andrew
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 6 published updates since Apr 2026
Other formats against Regular
+14 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
- -123
- May 2026 to Jun 2026
- Longest rise
- —
- No consecutive gains yet
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±25
- Mean absolute change; spread ±55
Regular rating in context
United States
#32,274of 83,635 rated members · higher than 61.3%
51,327 lower · 35 same rating · 32,273 higher · ties share a rank
Georgia
#666of 2,028 rated members · higher than 67.1%
1,362 lower · 1 same rating · 665 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,629 within 100 points of 1,067 (this player included)
1,050–1,099: 1,855 members (2.2%) · highlighted band is the player’s · dashed line is the target
62.8% below 1,100 (52,555 of 83,635; 61.3% below 1,067)
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 | 1,067 Pno change · 8 games | 1,081 Pno change · 8 games |
| Aug 2026 | 1,067 Pno change · 8 games | 1,081 Pno change · 8 games |
| Jul 2026 | 1,067 Pno change · 8 games | 1,081 Pno change · 8 games |
| Jun 2026 | 1,067 P-123 · 8 games | 1,081 P-81 · 8 games |
| May 2026 | 1,190 Pno change · 4 games | 1,162 P-1 · 4 games |
| Apr 2026 | 1,190 P4 games | 1,163 P4 games |