USCF player statistics
Yap, Marina
Official US Chess recordRegular rating
Published rating · Sep 2026 · 8 published updates since Feb 2026
Other formats against Regular
-30 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +189
- Aug 2026 to Sep 2026
- Biggest drop
- -96
- Apr 2026 to May 2026
- Longest rise
- 1 update
- +189 from Aug 2026 to Sep 2026
- Updates that moved
- 3 of 7
- Latest +189, Aug 2026 to Sep 2026
- Typical move
- ±42
- Mean absolute change; spread ±85.8
Regular rating in context
United States
#41,782of 83,635 rated members · higher than 49.9%
41,798 lower · 56 same rating · 41,781 higher · ties share a rank
California
#4,818of 9,051 rated members · higher than 46.7%
4,227 lower · 7 same rating · 4,817 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,990 within 100 points of 838 (this player included)
800–849: 2,310 members (2.7%) · highlighted band is the player’s · dashed line is the target
50.6% below 850 (42,370 of 83,635; 49.9% below 838)
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 | 838+189 | 808+181 |
| Aug 2026 | 649no change | 627 P-1 · 19 games |
| Jul 2026 | 649no change | 628 Pno change · 19 games |
| Jun 2026 | 649-12 | 628 P-60 · 19 games |
| May 2026 | 661 P-96 · 19 games | 688 P-62 · 9 games |
| Apr 2026 | 757 Pno change · 5 games | 750 Pno change · 5 games |
| Mar 2026 | 757 Pno change · 5 games | 750 Pno change · 5 games |
| Feb 2026 | 757 P5 games | 750 P5 games |
| Jan 2026 | — | — |
| Dec 2025 | — | — |