USCF player statistics
Chen, Sierra
- Gender
- Female
- US Chess reported rank
- #22,772 national · #2,089 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
- +248
- Jan 2026 to Feb 2026
- Biggest drop
- -62
- Apr 2026 to May 2026
- Longest rise
- 4 updates
- +365 from May 2026 to Sep 2026
- Updates that moved
- 9 of 9
- Latest -12, Sep 2026 to Oct 2026
- Typical move
- ±97
- Mean absolute change; spread ±95.4
Regular rating in context
United States
#29,880of 82,596 rated members · higher than 63.7%
52,680 lower · 37 same rating · 29,879 higher · ties share a rank
Texas
#2,587of 10,510 rated members · higher than 75.3%
7,918 lower · 6 same rating · 2,586 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 7,304 within 100 points of 1,132 (this player included)
1,100–1,149: 1,836 members (2.2%) · highlighted band is the player’s · dashed line is the target
64.5% below 1,150 (53,296 of 82,596; 63.7% below 1,132)
Percentile over time · United States
63.7% higher than · Oct 2026 · rank #29,880 of 82,596
Since Jan 2026
+40.3 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 | 1,132-12 | 1,187-8 |
| Sep 2026 | 1,144+129 | 1,195+125 |
| Aug 2026 | 1,015+42 | 1,070+53 |
| Jul 2026 | 973+22 | 1,017+24 |
| Jun 2026 | 951+172 | 993+167 |
| May 2026 | 779-62 | 826-39 |
| Apr 2026 | 841+97 | 865+74 |
| Mar 2026 | 744+85 | 791+91 |
| Feb 2026 | 659+248 | 700+220 |
| Jan 2026 | 411 P12 games | 480 P+315 · 14 games |
| Dec 2025 | — | 165 P10 games |