USCF player statistics
Duan, Ellen
- Gender
- Female
- US Chess reported rank
- #57,692 national · #2,154 in state
- Floor
- Regular 137 · Quick 137
- Rated games
- Regular 19 · Quick 19
US Chess record as of Sep 18, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +206
- Sep 2026 to Oct 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 4 updates
- +454 from Jun 2026 to Oct 2026
- Updates that moved
- 4 of 4
- Latest +206, Sep 2026 to Oct 2026
- Typical move
- ±114
- Mean absolute change; spread ±86.8
Regular rating in context
United States
#55,398of 82,596 rated members · higher than 32.8%
27,139 lower · 60 same rating · 55,397 higher · ties share a rank
New Jersey
#2,185of 3,069 rated members · higher than 28.7%
881 lower · 4 same rating · 2,184 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 10,526 within 100 points of 556 (this player included)
550–599: 2,631 members (3.1%) · highlighted band is the player’s · dashed line is the target
35.6% below 600 (29,460 of 82,596; 32.8% below 556)
Percentile over time · United States
32.8% higher than · Oct 2026 · rank #55,398 of 82,596
Since Jun 2026
+31.2 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 | 556 P+206 · 23 games | 544 P+219 · 23 games |
| Sep 2026 | 350 P+148 · 19 games | 325 P+131 · 19 games |
| Aug 2026 | 202 P+99 · 16 games | 194 P+91 · 16 games |
| Jul 2026 | 103 P+1 · 9 games | 103 P+1 · 9 games |
| Jun 2026 | 102 P6 games | 102 P6 games |
| May 2026 | — | — |