USCF player statistics

Kostolansky, Sebastian Lukas

USCF 16423881TexasUpdated: Nov 2026

US Chess membership expired on July 31, 2026. Published rating history is still shown below.

Join / Renew USCF
Official US Chess record

Enter an 8-digit USCF ID, or at least 3 letters of a name. Similar names in TX appear first.

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.
Rating format

Regular rating

2,543+3 since Oct 2026

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

Nov 20262,543 Regular
Dec 2025: 2548Jan 2026: 2525Feb 2026: 2519Mar 2026: 2519Apr 2026: 2519May 2026: 2519Jun 2026: 2519Jul 2026: 2519Aug 2026: 2519Sep 2026: 2516Oct 2026: 2540Nov 2026: 2543
Dec 2025Nov 2026
12 updates in this window · -5 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -197 Quick vs Regular (provisional)

    No national baseline for this rating band yet.

  • +108 Online Quick vs Regular (provisional)

    No national baseline for this rating band yet.

  • -21 Online Blitz vs Regular (provisional)

    No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+24
Sep 2026 to Oct 2026
Biggest drop
-23
Dec 2025 to Jan 2026
Longest rise
2 updates
+27 from Sep 2026 to Nov 2026
Updates that moved
5 of 11
Latest +3, Oct 2026 to Nov 2026
Typical move
±5
Mean absolute change; spread ±10.8

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Kostolansky, Sebastian Lukas
MonthRegularQuickOnline QuickOnline Blitz
Nov 20262,543+32,346 Pno change · 14 games2,651 P+196 · 15 games2,522 P+113 · 19 games
Oct 20262,540+242,346 Pno change · 14 games2,455no change2,409no change
Sep 20262,516-32,346 Pno change · 14 games2,455no change2,409no change
Aug 20262,519no change2,346 Pno change · 14 games2,455no change2,409no change
Jul 20262,519no change2,346 Pno change · 14 games2,455no change2,409no change
Jun 20262,519no change2,346 Pno change · 14 games2,455-1952,409-113
May 20262,519no change2,346 Pno change · 14 games2,650 P15 games2,522 P19 games
Apr 20262,519no change2,346 Pno change · 14 games——
Mar 20262,519no change2,346 Pno change · 14 games——
Feb 20262,519-62,346 Pno change · 14 games——
Jan 20262,525-232,346 Pno change · 14 games——
Dec 20252,5482,346 P14 games——
Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse

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.