USCF player statistics

Lewis, Kai Sebastian

USCF 15929867OregonUpdated: Nov 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 39905667
US Chess reported rank
#3,763 national · #41 in state
Floor
Regular 1,700 · Quick 1,400 · Blitz 1,500 · Online Regular 1,200

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

1,8790 since Oct 2026

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

Nov 20261,879 Regular
Dec 2025: 1947Jan 2026: 1925Feb 2026: 1925Mar 2026: 1925Apr 2026: 1907May 2026: 1907Jun 2026: 1910Jul 2026: 1910Aug 2026: 1910Sep 2026: 1910Oct 2026: 1879Nov 2026: 1879
Dec 2025Nov 2026
12 updates in this window · -68 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -282 Quick vs Regular

    Typical for 1,800–1,899 regular players: -129 (middle half -220 to -73, 1,805 established members). This gap is below the typical range.

  • -211 Blitz vs Regular

    Typical for 1,800–1,899 regular players: -208 (middle half -342 to -93, 996 established members). This gap is within the typical range.

  • -435 Online Regular vs Regular

    Typical for 1,800–1,899 regular players: -400 (middle half -622 to -205, 273 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+3
May 2026 to Jun 2026
Biggest drop
-31
Sep 2026 to Oct 2026
Longest rise
1 update
+3 from May 2026 to Jun 2026
Current run
1 update
Unchanged since Oct 2026
Typical move
±7
Mean absolute change; spread ±11.7

Regular rating in context

Nov 2026 update

United States

#5,683of 83,032 rated members · higher than 93.1%

77,332 lower · 18 same rating · 5,682 higher · ties share a rank

Oregon

#73of 1,501 rated members · higher than 95.1%

1,428 lower · 1 same rating · 72 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 4,757 within 100 points of 1,879 (this player included)

Player · 1,879
01,4252,850

1,850–1,899: 1,092 members (1.3%) · highlighted band is the player’s · dashed line is the target

93.6% below 1,900 (77,784 of 83,032; 93.1% below 1,879)

Percentile over time · United States

93.1% higher than · Nov 2026 · rank #5,683 of 83,032

Since Dec 2025
-1.8 pts

Dec 2025: higher than 94.9% (rank 4,049 of 81,102)Jan 2026: higher than 94.4% (rank 4,413 of 79,487)Feb 2026: higher than 94.5% (rank 4,567 of 83,940)Mar 2026: higher than 94.4% (rank 4,464 of 80,605)Apr 2026: higher than 94% (rank 4,796 of 80,831)May 2026: higher than 94% (rank 4,823 of 81,236)Jun 2026: higher than 94.2% (rank 4,781 of 83,290)Jul 2026: higher than 94.2% (rank 4,714 of 82,736)Aug 2026: higher than 94.2% (rank 4,735 of 83,080)Sep 2026: higher than 94.2% (rank 4,781 of 83,635)Oct 2026: higher than 93.1% (rank 5,626 of 82,596)Nov 2026: higher than 93.1% (rank 5,683 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 Oregon 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 Lewis, Kai Sebastian
MonthRegularQuickBlitzOnline Regular
Nov 20261,879no change1,597no change1,668no change1,444no change
Oct 20261,879-311,597no change1,668no change1,444no change
Sep 20261,910no change1,597no change1,668no change1,444no change
Aug 20261,910no change1,597-21,668no change1,444no change
Jul 20261,910no change1,599no change1,668no change1,444no change
Jun 20261,910+31,599no change1,668no change1,444no change
May 20261,907no change1,599no change1,668no change1,444no change
Apr 20261,907-181,599-251,668+41,444no change
Mar 20261,925no change1,624no change1,664no change1,444no change
Feb 20261,925no change1,624no change1,664no change1,444no change
Jan 20261,925-221,624no change1,664no change1,444no change
Dec 20251,9471,6241,6641,444
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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.