USCF player statistics

Guo, Serena

USCF 32561242WashingtonUpdated: Oct 2026
Official US Chess record

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Gender
Female
FIDE
FIDE 566024897
US Chess reported rank
#19,692 national · #535 in state
Floor
Regular 150 · Quick 150

US Chess record as of Sep 17, 2026

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Rating format

Regular rating

1,248+1 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20261,248 Regular
Dec 2025: 796Jan 2026: 1001Feb 2026: 997Mar 2026: 1019Apr 2026: 972May 2026: 1104Jun 2026: 1078Jul 2026: 1184Aug 2026: 1184Sep 2026: 1247Oct 2026: 1248
Dec 2025Oct 2026
11 updates in this window · +452 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -287 Quick vs Regular

    Typical for 1,200–1,299 regular players: -58 (middle half -117 to -18, 1,982 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+205
Dec 2025 to Jan 2026
Biggest drop
-47
Mar 2026 to Apr 2026
Longest rise
2 updates
+64 from Aug 2026 to Oct 2026
Updates that moved
9 of 10
Latest +1, Sep 2026 to Oct 2026
Typical move
±61
Mean absolute change; spread ±80

Regular rating in context

Oct 2026 update

United States

#25,871of 82,596 rated members · higher than 68.6%

56,689 lower · 37 same rating · 25,870 higher · ties share a rank

Washington

#739of 2,117 rated members · higher than 64.9%

1,376 lower · 3 same rating · 738 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 6,918 within 100 points of 1,248 (this player included)

Player · 1,248
01,4502,900

1,200–1,249: 1,811 members (2.1%) · highlighted band is the player’s · dashed line is the target

68.7% below 1,250 (56,755 of 82,596; 68.6% below 1,248)

Percentile over time · United States

68.6% higher than · Oct 2026 · rank #25,871 of 82,596

Since Dec 2025
+21 pts

Dec 2025: higher than 47.6% (rank 42,433 of 81,102)Jan 2026: higher than 57.6% (rank 33,600 of 79,487)Feb 2026: higher than 57.7% (rank 35,464 of 83,940)Mar 2026: higher than 58.3% (rank 33,536 of 80,605)Apr 2026: higher than 56.2% (rank 35,299 of 80,831)May 2026: higher than 62.3% (rank 30,529 of 81,236)Jun 2026: higher than 61.7% (rank 31,806 of 83,290)Jul 2026: higher than 66.5% (rank 27,683 of 82,736)Aug 2026: higher than 66.4% (rank 27,825 of 83,080)Sep 2026: higher than 69% (rank 25,820 of 83,635)Oct 2026: higher than 68.6% (rank 25,871 of 82,596)
Dec 2025Oct 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 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.

United States statistics Washington 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 Guo, Serena
MonthRegularQuick
Oct 20261,248+1961no change
Sep 20261,247+63961no change
Aug 20261,184no change961no change
Jul 20261,184+106961no change
Jun 20261,078-26961-20
May 20261,104+132981+173
Apr 2026972-47808-42
Mar 20261,019+22850+60
Feb 2026997-4790+30
Jan 20261,001+205760 P-6 · 20 games
Dec 2025796766 P20 games
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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.