USCF player statistics

Zarkou, Olin

USCF 31698763ArizonaLatest monthly rating update: Sep 2026

FIDE: FIDE 0

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Regular rating

9670 since Aug 2026

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

Sep 2026967 Regular

Compare format

Dec 2025Sep 2026

10 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-1 Quick vs Regular
No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: —; No gain between published updates yet
Biggest drop: —; No drop between published updates yet
Longest rise: —; No consecutive gains yet
Current run: 9 updates; Unchanged since Dec 2025
Typical move: ±0; Mean absolute change; spread ±0

Regular rating in context

Sep 2026 update

United States

#36,204of 83,635 rated members · higher than 56.6%

47,389 lower · 43 same rating · 36,203 higher · ties share a rank

Arizona

#783of 1,686 rated members · higher than 53.5%

903 lower · 1 same rating · 782 higher · ties share a rank

Where this rating sits · United States

83,635 rated members in 50-point bands · median 800–849 · 8,230 within 100 points of 967 (this player included)

Player · 967

01,4502,900

950–999: 2,074 members (2.4%) · highlighted band is the player’s · dashed line is the target

Target 1,000

58.2% below 1,000 (48,741 of 83,635; 56.6% below 967)

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 Arizona 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 Zarkou, Olin
Month	Regular	Quick
Sep 2026	967no change	966no change
Aug 2026	967no change	966no change
Jul 2026	967no change	966no change
Jun 2026	967no change	966no change
May 2026	967no change	966no change
Apr 2026	967no change	966no change
Mar 2026	967no change	966no change
Feb 2026	967no change	966no change
Jan 2026	967no change	966no change
Dec 2025	967	966