USCF player statistics

Ding, Isabella

USCF 16781955CaliforniaUpdated: Oct 2026

Official US Chess record

Gender: Female
FIDE: FIDE 39996271
US Chess reported rank: #3,682 national · #253 in state
Floor: Regular 1,700 · Quick 1,500 · Blitz 138

US Chess record as of Sep 15, 2026

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Regular rating

1,890-25 since Sep 2026

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

Oct 20261,890 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +213 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-104 Quick vs Regular
Typical for 1,800–1,899 regular players: -129 (middle half -222 to -74, 1,817 established members). This gap is within the typical range.
-796 Blitz vs Regular
Typical for 1,800–1,899 regular players: -213 (middle half -343 to -99, 1,009 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +92; Jan 2026 to Feb 2026
Biggest drop: -25; Sep 2026 to Oct 2026
Longest rise: 3 updates; +90 from Jun 2026 to Sep 2026
Updates that moved: 8 of 10; Latest -25, Sep 2026 to Oct 2026
Typical move: ±28; Mean absolute change; spread ±37.2

Regular rating in context

Oct 2026 update

United States

#5,385of 82,596 rated members · higher than 93.4%

77,197 lower · 15 same rating · 5,384 higher · ties share a rank

California

#766of 9,083 rated members · higher than 91.5%

8,317 lower · 1 same rating · 765 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 4,654 within 100 points of 1,890 (this player included)

Player · 1,890

01,4502,900

1,850–1,899: 1,066 members (1.2%) · highlighted band is the player’s · dashed line is the target

Target 1,900

93.6% below 1,900 (77,392 of 82,596; 93.4% below 1,890)

Percentile over time · United States

93.4% higher than · Oct 2026 · rank #5,385 of 82,596

Since Dec 2025
+7.2 pts

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 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 Ding, Isabella
Month	Regular	Quick	Blitz
Oct 2026	1,890-25	1,786+15	1,094no change
Sep 2026	1,915+34	1,771+59	1,094-1
Aug 2026	1,881+3	1,712+38	1,095no change
Jul 2026	1,878+53	1,674+72	1,095no change
Jun 2026	1,825no change	1,602no change	1,095no change
May 2026	1,825no change	1,602no change	1,095no change
Apr 2026	1,825+2	1,602+13	1,095no change
Mar 2026	1,823-8	1,589+7	1,095no change
Feb 2026	1,831+92	1,582-12	1,095+136
Jan 2026	1,739+62	1,594+66	959no change
Dec 2025	1,677	1,528	959

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