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USCF player statistics

Choi, Catherine

USCF 31010284IllinoisLatest monthly rating update: Sep 2026
Official US Chess record
Rating format

Regular rating

618

Provisional rating · Sep 2026

Sep 2026

618 provisional

Dec 2025: 541 provisionalJan 2026: 541 provisionalFeb 2026: 541 provisionalMar 2026: 541 provisionalApr 2026: 541 provisionalMay 2026: 618 provisionalJun 2026: 618 provisionalJul 2026: 618 provisionalAug 2026: 618 provisionalSep 2026: 618 provisional
Dec 2025Sep 2026
Open points are provisional. Lines connect available observations; missing months do not establish inactivity.
10 monthly rating updates in this window

The comparison field

Regular rating in context

Sep 2026 rating update

United States

#52,405

Among 83,635 rated members; tied ratings share a rank.

Higher than 37.2% of ratings in this population.

31,176 lower55 same rating52,404 higher

Illinois

#2,528

Among 4,678 rated members; tied ratings share a rank.

Higher than 45.9% of ratings in this population.

2,149 lower2 same rating2,527 higher

Where this rating sits

83,635 rated members · 50-point bands

Median falls in
800–849

10,471 members have ratings within 100 points of 618, including this player.

Player · 618
01,4502,900

Highlighted band: player rating · Dashed line: target rating

600–649: 2,641 members (3.1%). Select a band to explore the distribution.

Explore a target rating

Compare a rating with this published population.

39.2% have ratings below 650.

32,836 of 83,635 members. At 618, the figure is 37.2%.

The population stays fixed. This is a rating comparison, not a prediction of future rank or results. The published population includes this player at their recorded rating.

How these comparisons are calculated

Calculated from the Sep 2026 monthly rating update, using the same population as Chess67’s USCF statistics: US members classified as active in the published monthly records, excluding lifetime-coded records. Includes provisional ratings. These are Chess67 calculations, not official US Chess rankings. “Lower” is strictly lower; ties share a rank. National and state groups overlap.

Explore United States statistics Explore Illinois statistics

Published ratings by month

All available formats. P indicates a provisional rating.

Monthly USCF ratings for Choi, Catherine
MonthRegularQuick
Sep 2026618 P512 P
Aug 2026618 P512 P
Jul 2026618 P512 P
Jun 2026618 P512 P
May 2026618 P512 P
Apr 2026541 P512 P
Mar 2026541 P512 P
Feb 2026541 P512 P
Jan 2026541 P512 P
Dec 2025541 P512 P

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About these statistics

These pages use the monthly USCF rating updates available to Chess67. Ratings can change between monthly publications. Missing months do not mean a player was inactive. For current ratings and tournament history, consult the official US Chess record.

National USCF statisticsIllinois USCF statistics