USCF player statistics

Siu, Liam

USCF 30022059New YorkUpdated: Oct 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 39972607
US Chess reported rank
#3,042 national · #363 in state
Floor
Regular 1,700 · Quick 1,600 · Blitz 150 · Online Regular 100 · Online Quick 100

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

1,985+26 since Sep 2026

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

Oct 20261,985 Regular
Dec 2025: 1847Jan 2026: 1842Feb 2026: 1861Mar 2026: 1920Apr 2026: 1988May 2026: 1931Jun 2026: 1918Jul 2026: 1921Aug 2026: 1981Sep 2026: 1959Oct 2026: 1985
Dec 2025Oct 2026
11 updates in this window · +138 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -263 Quick vs Regular

    Typical for 1,900–1,999 regular players: -144 (middle half -232 to -83, 1,419 established members). This gap is below the typical range.

  • -632 Blitz vs Regular

    Typical for 1,900–1,999 regular players: -221 (middle half -329 to -99, 908 established members). This gap is below the typical range.

  • -834 Online Regular vs Regular

    Typical for 1,900–1,999 regular players: -460 (middle half -657 to -272, 275 established members). This gap is below the typical range.

  • -1,108 Online Quick vs Regular

    Typical for 1,900–1,999 regular players: -398 (middle half -687 to -210, 245 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+68
Mar 2026 to Apr 2026
Biggest drop
-57
Apr 2026 to May 2026
Longest rise
3 updates
+146 from Jan 2026 to Apr 2026
Updates that moved
10 of 10
Latest +26, Sep 2026 to Oct 2026
Typical move
±33
Mean absolute change; spread ±40.5

Regular rating in context

Oct 2026 update

United States

#3,488of 82,596 rated members · higher than 95.7%

79,099 lower · 10 same rating · 3,487 higher · ties share a rank

New York

#403of 9,044 rated members · higher than 95.5%

8,639 lower · 3 same rating · 402 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 3,492 within 100 points of 1,985 (this player included)

Player · 1,985
01,4502,900

1,950–1,999: 786 members (0.9%) · highlighted band is the player’s · dashed line is the target

96% below 2,000 (79,320 of 82,596; 95.7% below 1,985)

Percentile over time · United States

95.7% higher than · Oct 2026 · rank #3,488 of 82,596

Since Dec 2025
+3.6 pts

Dec 2025: higher than 92.1% (rank 6,316 of 81,102)Jan 2026: higher than 91.9% (rank 6,350 of 79,487)Feb 2026: higher than 92.6% (rank 6,127 of 83,940)Mar 2026: higher than 94.3% (rank 4,558 of 80,605)Apr 2026: higher than 95.7% (rank 3,403 of 80,831)May 2026: higher than 94.6% (rank 4,355 of 81,236)Jun 2026: higher than 94.4% (rank 4,630 of 83,290)Jul 2026: higher than 94.5% (rank 4,512 of 82,736)Aug 2026: higher than 95.8% (rank 3,463 of 83,080)Sep 2026: higher than 95.3% (rank 3,867 of 83,635)Oct 2026: higher than 95.7% (rank 3,488 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 New York 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 Siu, Liam
MonthRegularQuickBlitzOnline RegularOnline Quick
Oct 20261,985+261,722no change1,353no change1,151no change877no change
Sep 20261,959-221,722-401,353no change1,151no change877no change
Aug 20261,981+601,762+51,353no change1,151no change877no change
Jul 20261,921+31,757no change1,353+591,151no change877no change
Jun 20261,918-131,757-211,294no change1,151no change877no change
May 20261,931-571,778-441,294no change1,151no change877no change
Apr 20261,988+681,822+681,294no change1,151no change877no change
Mar 20261,920+591,754+841,294no change1,151no change877no change
Feb 20261,861+191,670no change1,294+1251,151no change877no change
Jan 20261,842-51,670+241,169no change1,151no change877no change
Dec 20251,8471,6461,1691,151877
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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.