USCF player statistics

Sun, Allen

USCF 31536260IndianaLatest monthly rating update: Sep 2026

FIDE: FIDE 0

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Regular rating

638-1 since Aug 2026

Published rating · Sep 2026 · 10 published updates since Dec 2025

Sep 2026638 Regular

Compare format

Dec 2025Sep 2026

10 updates in this window · +50 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Compare with another playerOverlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

-11 Quick vs Regular
No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +49; Apr 2026 to May 2026
Biggest drop: -1; Aug 2026 to Sep 2026
Longest rise: 1 update; +49 from Apr 2026 to May 2026
Updates that moved: 3 of 9; Latest -1, Aug 2026 to Sep 2026
Typical move: ±6; Mean absolute change; spread ±16.3

Regular rating in context

Sep 2026 update

United States

38.5%of the comparison population has a lower rating.

32,214 lower · 51 same rating · 51,370 higher

Indiana

42.2%of the comparison population has a lower rating.

631 lower · 3 same rating · 858 higher

Where this rating sits · United States

83,635 rated members in 50-point bands · median 800–849 · 10,311 within 100 points of 638

Player · 638

01,4502,900

600–649: 2,641 members (3.1%) · highlighted band is the player’s · dashed line is the target

Target 650

39.2% below 650 (32,836 of 83,635; 38.5% below 638)

How these comparisons are calculated

Chess67 calculations from the Sep 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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.

United States statistics Indiana 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 Sun, Allen
Month	Regular	Quick
Sep 2026	638-1	627no change
Aug 2026	639+2	627+2
Jul 2026	637no change	625no change
Jun 2026	637no change	625no change
May 2026	637+49	625+71
Apr 2026	588no change	554no change
Mar 2026	588no change	554no change
Feb 2026	588no change	554no change
Jan 2026	588no change	554no change
Dec 2025	588	554