USCF player statistics
Yoon-Winawer, Yoomi Mae
- Biggest rank climb · #39 in New York (Quick)
- Biggest rank climb · #36 in New York (Regular)
- Fastest rising · #45 in New York (Quick)
- Fastest rising · #41 in New York (Regular)
- Gender
- Female
- US Chess reported rank
- #51,885 national · #5,850 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
- +269
- Apr 2026 to May 2026
- Biggest drop
- -107
- Jul 2026 to Aug 2026
- Longest rise
- 2 updates
- +314 from Aug 2026 to Oct 2026
- Updates that moved
- 6 of 6
- Latest +184, Sep 2026 to Oct 2026
- Typical move
- ±124
- Mean absolute change; spread ±145.9
Regular rating in context
United States
#50,616of 82,596 rated members · higher than 38.6%
31,931 lower · 50 same rating · 50,615 higher · ties share a rank
New York
#5,315of 9,044 rated members · higher than 41.1%
3,721 lower · 9 same rating · 5,314 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 10,071 within 100 points of 647 (this player included)
600–649: 2,612 members (3.1%) · highlighted band is the player’s · dashed line is the target
38.8% below 650 (32,072 of 82,596; 38.6% below 647)
Percentile over time · United States
38.6% higher than · Oct 2026 · rank #50,616 of 82,596
Since Apr 2026
+26.5 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 | 647+184 | 640+184 |
| Sep 2026 | 463+130 | 456+129 |
| Aug 2026 | 333-107 | 327-107 |
| Jul 2026 | 440-35 | 434-32 |
| Jun 2026 | 475-19 | 466-13 |
| May 2026 | 494 P+269 · 24 games | 479 P+254 · 24 games |
| Apr 2026 | 225 P7 games | 225 P7 games |
| Mar 2026 | — | — |
| Feb 2026 | — | — |