USCF player statistics

Chelladorai, Isabelle

USCF 31160822GeorgiaUpdated: Oct 2026

Official US Chess record

Gender: Female
FIDE: FIDE 39957438
US Chess reported rank: #5,774 national · #129 in state
Floor: Regular 1,600 · Quick 1,500 · Blitz 1,200

US Chess record as of Oct 23, 2026

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Regular rating

1,8070 since Sep 2026

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

Oct 20261,807 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +35 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-192 Quick vs Regular
Typical for 1,800–1,899 regular players: -129 (middle half -222 to -74, 1,817 established members). This gap is within the typical range.
-398 Blitz vs Regular
Typical for 1,800–1,899 regular players: -213 (middle half -343 to -99, 1,009 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +62; Feb 2026 to Mar 2026
Biggest drop: -69; Apr 2026 to May 2026
Longest rise: 2 updates; +54 from May 2026 to Jul 2026
Current run: 1 update; Unchanged since Sep 2026
Typical move: ±27; Mean absolute change; spread ±39.2

Regular rating in context

Oct 2026 update

United States

#7,377of 82,596 rated members · higher than 91%

75,195 lower · 25 same rating · 7,376 higher · ties share a rank

Georgia

#154of 2,015 rated members · higher than 92.3%

1,861 lower · 1 same rating · 153 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 5,374 within 100 points of 1,807 (this player included)

Player · 1,807

01,4502,900

1,800–1,849: 1,584 members (1.9%) · highlighted band is the player’s · dashed line is the target

Target 1,850

92.4% below 1,850 (76,326 of 82,596; 91% below 1,807)

Percentile over time · United States

91% higher than · Oct 2026 · rank #7,377 of 82,596

Since Dec 2025
+1.4 pts

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 Georgia 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 Chelladorai, Isabelle
Month	Regular	Quick	Blitz
Oct 2026	1,807no change	1,615no change	1,409no change
Sep 2026	1,807+36	1,615+13	1,409no change
Aug 2026	1,771-33	1,602no change	1,409no change
Jul 2026	1,804+1	1,602-56	1,409+68
Jun 2026	1,803+53	1,658-36	1,341no change
May 2026	1,750-69	1,694-33	1,341-5
Apr 2026	1,819no change	1,727-29	1,346-3
Mar 2026	1,819+62	1,756+79	1,349+101
Feb 2026	1,757-2	1,677+53	1,248no change
Jan 2026	1,759-13	1,624+16	1,248no change
Dec 2025	1,772	1,608	1,248

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