USCF player statistics

Riffel, Zion

USCF 32098715ArizonaUpdated: Oct 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 566003458
US Chess reported rank
#17,501 national · #378 in state
Floor
Regular 1,300 · Quick 1,200

US Chess record as of Sep 17, 2026

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Rating format

Regular rating

1,516+192 since Sep 2026

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

Oct 20261,516 Regular
Dec 2025: 1039Jan 2026: 1192Feb 2026: 1356Mar 2026: 1324Apr 2026: 1324May 2026: 1324Jun 2026: 1324Jul 2026: 1324Aug 2026: 1324Sep 2026: 1324Oct 2026: 1516
Dec 2025Oct 2026
11 updates in this window · +477 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -31 Quick vs Regular

    Typical for 1,500–1,599 regular players: -106 (middle half -187 to -48, 2,101 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+192
Sep 2026 to Oct 2026
Biggest drop
-32
Feb 2026 to Mar 2026
Longest rise
2 updates
+317 from Dec 2025 to Feb 2026
Updates that moved
4 of 10
Latest +192, Sep 2026 to Oct 2026
Typical move
±54
Mean absolute change; spread ±85.3

Regular rating in context

Oct 2026 update

United States

#16,583of 82,596 rated members · higher than 79.8%

65,975 lower · 39 same rating · 16,582 higher · ties share a rank

Arizona

#391of 1,672 rated members · higher than 76.5%

1,280 lower · 2 same rating · 390 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 6,843 within 100 points of 1,516 (this player included)

Player · 1,516
01,4502,900

1,500–1,549: 1,907 members (2.3%) · highlighted band is the player’s · dashed line is the target

81.2% below 1,550 (67,094 of 82,596; 79.8% below 1,516)

Percentile over time · United States

79.8% higher than · Oct 2026 · rank #16,583 of 82,596

Since Dec 2025
+20 pts

Dec 2025: higher than 59.8% (rank 32,523 of 81,102)Jan 2026: higher than 65.9% (rank 27,002 of 79,487)Feb 2026: higher than 73.1% (rank 22,502 of 83,940)Mar 2026: higher than 71.6% (rank 22,843 of 80,605)Apr 2026: higher than 71.7% (rank 22,798 of 80,831)May 2026: higher than 71.7% (rank 22,916 of 81,236)Jun 2026: higher than 72.2% (rank 23,090 of 83,290)Jul 2026: higher than 72.3% (rank 22,830 of 82,736)Aug 2026: higher than 72.3% (rank 22,972 of 83,080)Sep 2026: higher than 72.2% (rank 23,170 of 83,635)Oct 2026: higher than 79.8% (rank 16,583 of 82,596)
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 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 Riffel, Zion
MonthRegularQuick
Oct 20261,516+1921,485+171
Sep 20261,324no change1,314no change
Aug 20261,324no change1,314no change
Jul 20261,324no change1,314no change
Jun 20261,324no change1,314no change
May 20261,324no change1,314no change
Apr 20261,324no change1,314no change
Mar 20261,324-321,314-6
Feb 20261,356+1641,320+184
Jan 20261,192+1531,136+171
Dec 20251,039965
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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.