USCF player statistics
Shum, Mark Peter
- Gender
- Male
- Floor
- Regular 113 · Quick 113
US Chess record as of Sep 18, 2026
Regular rating
Provisional rating · Oct 2026 · 1 published update since Oct 2026
Other formats against Regular
-4 Quick vs Regular (provisional)
Typical for 900–999 regular players: -19 (middle half -49 to +4, 2,330 established members). This gap is within the typical range.
Regular rating in context
United States
#38,817of 82,596 rated members · higher than 52.9%
43,734 lower · 46 same rating · 38,816 higher · ties share a rank
California
#4,528of 9,083 rated members · higher than 50%
4,546 lower · 10 same rating · 4,527 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 8,525 within 100 points of 904 (this player included)
900–949: 2,102 members (2.5%) · highlighted band is the player’s · dashed line is the target
55.3% below 950 (45,678 of 82,596; 52.9% below 904)
How these comparisons are calculated
Chess67 calculations from the Oct 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 |
|---|---|---|
| Oct 2026 | 904 P6 games | 900 P6 games |
| Sep 2026 | — | — |