USCF player statistics

Arunachalam, Vivek

USCF 16647773CaliforniaUpdated: Nov 2026

Official US Chess record

Gender: Male
US Chess reported rank: #36,069 national · #1,962 in state
Floor: Regular 150 · Quick 150 · Blitz 113 · Online Quick 100

US Chess record as of Sep 15, 2026

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Regular rating

939-29 since Oct 2026

Published rating · Nov 2026 · 4 published updates since Aug 2026

Nov 2026939 Regular

Compare format

Aug 2026Nov 2026

4 updates in this window · +151 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-38 Quick vs Regular
Typical for 900–999 regular players: -19 (middle half -47 to +3, 2,371 established members). This gap is within the typical range.
-393 Blitz vs Regular
Typical for 900–999 regular players: -118 (middle half -267 to -7, 249 established members). This gap is below the typical range.
-66 Online Quick vs Regular
Typical for 900–999 regular players: +6 (middle half -176 to +243, 152 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +180; Sep 2026 to Oct 2026
Biggest drop: -29; Oct 2026 to Nov 2026
Longest rise: 1 update; +180 from Sep 2026 to Oct 2026
Updates that moved: 2 of 3; Latest -29, Oct 2026 to Nov 2026
Typical move: ±70; Mean absolute change; spread ±113.2

Regular rating in context

Nov 2026 update

United States

#37,670of 83,032 rated members · higher than 54.5%

45,319 lower · 44 same rating · 37,669 higher · ties share a rank

California

#4,438of 9,288 rated members · higher than 52.1%

4,844 lower · 7 same rating · 4,437 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 8,409 within 100 points of 939 (this player included)

Player · 939

01,4252,850

900–949: 2,171 members (2.6%) · highlighted band is the player’s · dashed line is the target

Target 950

55.1% below 950 (45,828 of 83,032; 54.5% below 939)

Percentile over time · United States

54.5% higher than · Nov 2026 · rank #37,670 of 83,032

Since Aug 2026
+7.2 pts

Aug 2026Nov 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 Arunachalam, Vivek
Month	Regular	Quick	Blitz	Online Quick
Nov 2026	939-29	901-36	546no change	873no change
Oct 2026	968+180	937+183	546no change	873no change
Sep 2026	788no change	754no change	546no change	873no change
Aug 2026	788	754	546	873

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