USCF player statistics

Zhou, Chelsea

USCF 15239016CaliforniaUpdated: Nov 2026
Official US Chess record

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Gender
Female
FIDE title
WC
FIDE
FIDE 30950996
TD
Club
Floor
Regular 1,800 · Quick 117 · Blitz 125 · Online Regular 1,700
Rated games
Blitz 20

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

1,9700 since Oct 2026

Published rating · Nov 2026 · 12 published updates since Dec 2025

Nov 20261,970 Regular
Dec 2025: 1970Jan 2026: 1970Feb 2026: 1970Mar 2026: 1970Apr 2026: 1970May 2026: 1970Jun 2026: 1970Jul 2026: 1970Aug 2026: 1970Sep 2026: 1970Oct 2026: 1970Nov 2026: 1970
Dec 2025Nov 2026
12 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • -632 Quick vs Regular

    Typical for 1,900–1,999 regular players: -143 (middle half -231 to -83, 1,430 established members). This gap is below the typical range.

  • -279 Blitz vs Regular (provisional)

    Typical for 1,900–1,999 regular players: -222 (middle half -332 to -103, 907 established members). This gap is within the typical range.

  • -186 Online Regular vs Regular

    Typical for 1,900–1,999 regular players: -470 (middle half -658 to -273, 264 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
—
No gain between published updates yet
Biggest drop
—
No drop between published updates yet
Longest rise
—
No consecutive gains yet
Current run
11 updates
Unchanged since Dec 2025
Typical move
±0
Mean absolute change; spread ±0

Regular rating in context

Nov 2026 update

United States

#3,754of 83,032 rated members · higher than 95.4%

79,259 lower · 20 same rating · 3,753 higher · ties share a rank

California

#556of 9,288 rated members · higher than 93.9%

8,730 lower · 3 same rating · 555 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 3,696 within 100 points of 1,970 (this player included)

Player · 1,970
01,4252,850

1,950–1,999: 798 members (0.9%) · highlighted band is the player’s · dashed line is the target

96% below 2,000 (79,720 of 83,032; 95.4% below 1,970)

Percentile over time · United States

95.4% higher than · Nov 2026 · rank #3,754 of 83,032

Since Dec 2025
0 pts

Dec 2025: higher than 95.4% (rank 3,660 of 81,102)Jan 2026: higher than 95.4% (rank 3,623 of 79,487)Feb 2026: higher than 95.4% (rank 3,781 of 83,940)Mar 2026: higher than 95.4% (rank 3,678 of 80,605)Apr 2026: higher than 95.4% (rank 3,682 of 80,831)May 2026: higher than 95.4% (rank 3,696 of 81,236)Jun 2026: higher than 95.5% (rank 3,679 of 83,290)Jul 2026: higher than 95.5% (rank 3,628 of 82,736)Aug 2026: higher than 95.6% (rank 3,632 of 83,080)Sep 2026: higher than 95.5% (rank 3,679 of 83,635)Oct 2026: higher than 95.4% (rank 3,719 of 82,596)Nov 2026: higher than 95.4% (rank 3,754 of 83,032)
Dec 2025Nov 2026
Each month against that month’s active pool, so pool growth and rating drift both count.
How these comparisons are calculated

Chess67 calculations from the Nov 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.

United States statistics California statistics

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Zhou, Chelsea
MonthRegularQuickBlitzOnline Regular
Nov 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Oct 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Sep 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Aug 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Jul 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Jun 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
May 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Apr 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Mar 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Feb 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Jan 20261,970no change1,338no change1,691 Pno change · 20 games1,784no change
Dec 20251,9701,3381,691 P20 games1,784
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.