USCF player statistics
Sefcheck, Mark M
Official US Chess record- FIDE
- FIDE 30967953
- TD
- Club
- US Chess reported rank
- #7,745 national · #307 in state
- Floor
- Regular 1,700 · Quick 1,600 · Blitz 1,500
US Chess record as of Sep 14, 2026
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-102 Quick vs Regular
No national baseline for this rating band yet.
-38 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +2
- May 2026 to Jun 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +2 from May 2026 to Jun 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.7
Regular rating in context
United States
#10,367of 83,635 rated members · higher than 87.5%
73,232 lower · 37 same rating · 10,366 higher · ties share a rank
Illinois
#440of 4,678 rated members · higher than 90.5%
4,234 lower · 5 same rating · 439 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,183 within 100 points of 1,702 (this player included)
1,700–1,749: 1,684 members (2%) · highlighted band is the player’s · dashed line is the target
89.2% below 1,750 (74,637 of 83,635; 87.5% below 1,702)
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 | Blitz |
|---|---|---|---|
| Sep 2026 | 1,702no change | 1,600no change | 1,664no change |
| Aug 2026 | 1,702no change | 1,600no change | 1,664no change |
| Jul 2026 | 1,702no change | 1,600no change | 1,664no change |
| Jun 2026 | 1,702+2 | 1,600no change | 1,664no change |
| May 2026 | 1,700no change | 1,600no change | 1,664no change |
| Apr 2026 | 1,700no change | 1,600no change | 1,664no change |
| Mar 2026 | 1,700no change | 1,600no change | 1,664no change |
| Feb 2026 | 1,700no change | 1,600no change | 1,664no change |
| Jan 2026 | 1,700no change | 1,600no change | 1,664no change |
| Dec 2025 | 1,700 | 1,600 | 1,664 |