USCF player statistics
Brill, Mark L
Official US Chess record- US Chess reported rank
- #10,622 national · #176 in state
- Floor
- Regular 1,300
US Chess record as of Sep 15, 2026
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- -103
- Apr 2026 to May 2026
- Longest rise
- —
- No consecutive gains yet
- Current run
- 4 updates
- Unchanged since May 2026
- Typical move
- ±11
- Mean absolute change; spread ±34.3
Regular rating in context
United States
#14,310of 83,635 rated members · higher than 82.8%
69,293 lower · 33 same rating · 14,309 higher · ties share a rank
Missouri
#232of 1,373 rated members · higher than 83.1%
1,141 lower · 1 same rating · 231 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,739 within 100 points of 1,587 (this player included)
1,550–1,599: 1,475 members (1.7%) · highlighted band is the player’s · dashed line is the target
83.3% below 1,600 (69,680 of 83,635; 82.8% below 1,587)
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 |
|---|---|
| Sep 2026 | 1,587no change |
| Aug 2026 | 1,587no change |
| Jul 2026 | 1,587no change |
| Jun 2026 | 1,587no change |
| May 2026 | 1,587-103 |
| Apr 2026 | 1,690no change |
| Mar 2026 | 1,690no change |
| Feb 2026 | 1,690no change |
| Jan 2026 | 1,690no change |
| Dec 2025 | 1,690 |