USCF player statistics

Petrilli, Leon Kingsley

USCF 31615568CaliforniaLatest monthly rating update: Sep 2026

FIDE: FIDE 0

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Regular rating

7730 since Aug 2026

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

Sep 2026773 Regular

Compare format

Dec 2025Sep 2026

10 updates in this window · +83 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-19 Quick vs Regular
No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +70; Mar 2026 to Apr 2026
Biggest drop: —; No drop between published updates yet
Longest rise: 2 updates; +83 from Mar 2026 to May 2026
Current run: 4 updates; Unchanged since May 2026
Typical move: ±9; Mean absolute change; spread ±23.2

Regular rating in context

Sep 2026 update

United States

#44,778of 83,635 rated members · higher than 46.4%

38,813 lower · 45 same rating · 44,777 higher · ties share a rank

California

#5,143of 9,051 rated members · higher than 43.1%

3,905 lower · 4 same rating · 5,142 higher · ties share a rank

Where this rating sits · United States

83,635 rated members in 50-point bands · median 800–849 · 9,504 within 100 points of 773 (this player included)

Player · 773

01,4502,900

750–799: 2,331 members (2.7%) · highlighted band is the player’s · dashed line is the target

Target 800

47.8% below 800 (40,060 of 83,635; 46.4% below 773)

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, 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 Petrilli, Leon Kingsley
Month	Regular	Quick
Sep 2026	773no change	754-1
Aug 2026	773no change	755+1
Jul 2026	773no change	754no change
Jun 2026	773no change	754no change
May 2026	773+13	754+13
Apr 2026	760+70	741+52
Mar 2026	690no change	689no change
Feb 2026	690no change	689no change
Jan 2026	690no change	689no change
Dec 2025	690	689