USCF player statistics
Yap, Marina
- Biggest rank climb · #63 in California (Quick)
- Biggest rank climb · #83 in California (Regular)
- Fastest rising · #28 in California (Quick)
- Fastest rising · #37 in California (Regular)
- Gender
- Female
- FIDE
- FIDE 0
- US Chess reported rank
- #33,954 national · #1,882 in state
- Floor
- Regular 150 · Quick 150
US Chess record as of Sep 18, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +196
- Sep 2026 to Oct 2026
- Biggest drop
- -96
- Apr 2026 to May 2026
- Longest rise
- 2 updates
- +385 from Aug 2026 to Oct 2026
- Updates that moved
- 4 of 8
- Latest +196, Sep 2026 to Oct 2026
- Typical move
- ±62
- Mean absolute change; spread ±102.8
Regular rating in context
United States
#33,591of 82,596 rated members · higher than 59.2%
48,968 lower · 38 same rating · 33,590 higher · ties share a rank
California
#3,943of 9,083 rated members · higher than 56.5%
5,136 lower · 5 same rating · 3,942 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 7,823 within 100 points of 1,034 (this player included)
1,000–1,049: 1,938 members (2.3%) · highlighted band is the player’s · dashed line is the target
60% below 1,050 (49,606 of 82,596; 59.2% below 1,034)
Percentile over time · United States
59.2% higher than · Oct 2026 · rank #33,591 of 82,596
Since Feb 2026
+14.1 pts
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 | 1,034+196 | 1,019+211 |
| 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 | — | — |