USCF player statistics

Kalonaris, Zeno

USCF 16307134CaliforniaUpdated: Nov 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 30982340
US Chess reported rank
#2,267 national · #162 in state
Floor
Regular 1,800 · Quick 1,400 · Blitz 1,500

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

2,019+2 since Oct 2026

Published rating · Nov 2026 · 12 published updates since Dec 2025

Nov 20262,019 Regular
Dec 2025: 1774Jan 2026: 1774Feb 2026: 1887Mar 2026: 1883Apr 2026: 1883May 2026: 1883Jun 2026: 1949Jul 2026: 1992Aug 2026: 2037Sep 2026: 2017Oct 2026: 2017Nov 2026: 2019
Dec 2025Nov 2026
12 updates in this window · +245 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • -381 Quick vs Regular

    Typical for 2,000–2,099 regular players: -143 (middle half -225 to -83, 1,068 established members). This gap is below the typical range.

  • -275 Blitz vs Regular

    Typical for 2,000–2,099 regular players: -213 (middle half -324 to -106, 717 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+113
Jan 2026 to Feb 2026
Biggest drop
-20
Aug 2026 to Sep 2026
Longest rise
3 updates
+154 from May 2026 to Aug 2026
Updates that moved
7 of 11
Latest +2, Oct 2026 to Nov 2026
Typical move
±27
Mean absolute change; spread ±40

Regular rating in context

Nov 2026 update

United States

#2,855of 83,032 rated members · higher than 96.5%

80,157 lower · 21 same rating · 2,854 higher · ties share a rank

California

#440of 9,288 rated members · higher than 95.2%

8,846 lower · 3 same rating · 439 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 3,003 within 100 points of 2,019 (this player included)

Player · 2,019
01,4252,850

2,000–2,049: 874 members (1%) · highlighted band is the player’s · dashed line is the target

97% below 2,050 (80,594 of 83,032; 96.5% below 2,019)

Percentile over time · United States

96.5% higher than · Nov 2026 · rank #2,855 of 83,032

Since Dec 2025
+6.9 pts

Dec 2025: higher than 89.6% (rank 8,328 of 81,102)Jan 2026: higher than 89.5% (rank 8,246 of 79,487)Feb 2026: higher than 93.3% (rank 5,545 of 83,940)Mar 2026: higher than 93.1% (rank 5,492 of 80,605)Apr 2026: higher than 93.1% (rank 5,490 of 80,831)May 2026: higher than 93.1% (rank 5,504 of 81,236)Jun 2026: higher than 95.1% (rank 4,042 of 83,290)Jul 2026: higher than 95.9% (rank 3,295 of 82,736)Aug 2026: higher than 96.9% (rank 2,488 of 83,080)Sep 2026: higher than 96.5% (rank 2,841 of 83,635)Oct 2026: higher than 96.5% (rank 2,858 of 82,596)Nov 2026: higher than 96.5% (rank 2,855 of 83,032)
Dec 2025Nov 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 Kalonaris, Zeno
MonthRegularQuickBlitz
Nov 20262,019+21,638+341,744+1
Oct 20262,017no change1,604no change1,743no change
Sep 20262,017-201,604no change1,743-1
Aug 20262,037+451,604no change1,744+1
Jul 20261,992+431,604-71,743no change
Jun 20261,949+661,611+921,743-1
May 20261,883no change1,519no change1,744no change
Apr 20261,883no change1,519no change1,744no change
Mar 20261,883-41,519no change1,744-1
Feb 20261,887+1131,519+391,745+90
Jan 20261,774no change1,480no change1,655-18
Dec 20251,7741,4801,673
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.