USCF player statistics

Zhang, Iris Runyi

USCF 16476340WashingtonUpdated: Oct 2026
Official US Chess record

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Gender
Female
FIDE
FIDE 30990564
US Chess reported rank
#8,368 national · #226 in state
Floor
Regular 1,400 · Quick 150 · Online Regular 1,400

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

1,6790 since Sep 2026

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

Oct 20261,679 Regular
Dec 2025: 1545Jan 2026: 1590Feb 2026: 1585Mar 2026: 1585Apr 2026: 1585May 2026: 1679Jun 2026: 1679Jul 2026: 1679Aug 2026: 1679Sep 2026: 1679Oct 2026: 1679
Dec 2025Oct 2026
11 updates in this window · +134 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -319 Quick vs Regular

    Typical for 1,600–1,699 regular players: -119 (middle half -202 to -59, 2,135 established members). This gap is below the typical range.

  • -248 Online Regular vs Regular

    Typical for 1,600–1,699 regular players: -360 (middle half -572 to -180, 262 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+94
Apr 2026 to May 2026
Biggest drop
-5
Jan 2026 to Feb 2026
Longest rise
1 update
+94 from Apr 2026 to May 2026
Current run
5 updates
Unchanged since May 2026
Typical move
±14
Mean absolute change; spread ±31.8

Regular rating in context

Oct 2026 update

United States

#11,255of 82,596 rated members · higher than 86.3%

71,312 lower · 30 same rating · 11,254 higher · ties share a rank

Washington

#318of 2,117 rated members · higher than 84.9%

1,798 lower · 2 same rating · 317 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 6,336 within 100 points of 1,679 (this player included)

Player · 1,679
01,4502,900

1,650–1,699: 1,463 members (1.7%) · highlighted band is the player’s · dashed line is the target

87% below 1,700 (71,896 of 82,596; 86.3% below 1,679)

Percentile over time · United States

86.3% higher than · Oct 2026 · rank #11,255 of 82,596

Since Dec 2025
+5.2 pts

Dec 2025: higher than 81.1% (rank 15,300 of 81,102)Jan 2026: higher than 82.5% (rank 13,839 of 79,487)Feb 2026: higher than 82.6% (rank 14,568 of 83,940)Mar 2026: higher than 82.4% (rank 14,150 of 80,605)Apr 2026: higher than 82.4% (rank 14,128 of 80,831)May 2026: higher than 86.2% (rank 11,135 of 81,236)Jun 2026: higher than 86.5% (rank 11,153 of 83,290)Jul 2026: higher than 86.5% (rank 11,075 of 82,736)Aug 2026: higher than 86.5% (rank 11,130 of 83,080)Sep 2026: higher than 86.5% (rank 11,234 of 83,635)Oct 2026: higher than 86.3% (rank 11,255 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 Washington 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 Zhang, Iris Runyi
MonthRegularQuickOnline Regular
Oct 20261,679no change1,360no change1,431no change
Sep 20261,679no change1,360-21,431no change
Aug 20261,679no change1,362no change1,431no change
Jul 20261,679no change1,362no change1,431no change
Jun 20261,679no change1,362no change1,431no change
May 20261,679+941,362no change1,431no change
Apr 20261,585no change1,362no change1,431no change
Mar 20261,585no change1,362no change1,431no change
Feb 20261,585-51,362+31,431no change
Jan 20261,590+451,359no change1,431no change
Dec 20251,5451,3591,431
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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.