USCF player statistics
Mazur, Michael D
- Gender
- Male
- US Chess reported rank
- #12,319 national · #105 in state
- Floor
- Regular 1,300 · Quick 150
US Chess record as of Sep 18, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +184
- Mar 2026 to Apr 2026
- Biggest drop
- -26
- Jun 2026 to Jul 2026
- Longest rise
- 1 update
- +184 from Mar 2026 to Apr 2026
- Updates that moved
- 6 of 11
- Latest +60, Oct 2026 to Nov 2026
- Typical move
- ±42
- Mean absolute change; spread ±73.6
Regular rating in context
United States
#14,778of 83,032 rated members · higher than 82.1%
68,224 lower · 31 same rating · 14,777 higher · ties share a rank
Nevada
#158of 738 rated members · higher than 78.5%
580 lower · 1 same rating · 157 higher · ties share a rank
Where this rating sits · United States
83,032 rated members in 50-point bands · median 850–899 · 6,814 within 100 points of 1,576 (this player included)
1,550–1,599: 1,480 members (1.7%) · highlighted band is the player’s · dashed line is the target
83% below 1,600 (68,918 of 83,032; 82.1% below 1,576)
Percentile over time · United States
82.1% higher than · Nov 2026 · rank #14,778 of 83,032
Since Dec 2025
+14.6 pts
How these comparisons are calculated
Chess67 calculations from the Nov 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 |
|---|---|---|
| Nov 2026 | 1,576+60 | 1,397-1 |
| Oct 2026 | 1,516no change | 1,398no change |
| Sep 2026 | 1,516+165 | 1,398+147 |
| Aug 2026 | 1,351no change | 1,251 P-1 · 24 games |
| Jul 2026 | 1,351-26 | 1,252 P+1 · 24 games |
| Jun 2026 | 1,377+1 | 1,251 Pno change · 19 games |
| May 2026 | 1,376-24 | 1,251 Pno change · 19 games |
| Apr 2026 | 1,400 P+184 · 19 games | 1,251 P+131 · 15 games |
| Mar 2026 | 1,216 Pno change · 5 games | 1,120 Pno change · 5 games |
| Feb 2026 | 1,216 Pno change · 5 games | 1,120 Pno change · 5 games |
| Jan 2026 | 1,216 Pno change · 5 games | 1,120 Pno change · 5 games |
| Dec 2025 | 1,216 P5 games | 1,120 P5 games |