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William Obrien

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USA · 28 yrs · K=40 · Peak 1877 (Oct 2025)

Best performance: 2132 at 22nd St Amant Memorial Tournament - 2000 and Over(Best of 2025)

World #=146868United States #=5067among all players, November list

Classical rating

1877

FIDE’s November 2026 list. No rated games since, so the live rating is the same.

On FIDE’s list since Sep 2022 · Inactive on FIDE’s list

How live ratings are calculated

Rating History · Classical

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Classical rating unchanged at 1877 over the last 12 months; peak 1877 in October 2025.

Official rating by month

Each month: the rating, its change from the list before, and the rated games FIDE counted.

ListClassicalBlitz
Nov 20261877, 0, 0 games1811, 0, 0 games
Oct 20261877, 0, 0 games1811, 0, 0 games
Sep 20261877, 0, 0 games1811, 0, 0 games
Aug 20261877, 0, 0 games1811, 0, 0 games
Jul 20261877, 0, 0 games1811, 0, 0 games
Jun 20261877, 0, 0 games1811, 0, 0 games
May 20261877, 0, 0 games1811, +17, 7 games
Apr 20261877, 0, 0 games1794, 0, 0 games
Mar 20261877, 0, 0 games1794, 0, 0 games
Feb 20261877, 0, 0 games1794, 0, 0 games
Jan 20261877, 0, 0 games1794, 0, 0 games
Dec 20251877, 0, 0 games1794, 0, 0 games

Form · Classical

oldest → latest

From 41 classical games on record, the latest on Sep 7, 2025.

Classical games since the November list

No rated classical games this rating periodsince the NOV26 list (Nov 1, 2026)

Last playedScore
22nd St Amant Memorial Tournament - 2000 and OverSep 6, 2025 – Sep 7, 2025TPR 21322/4

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 33 rated classical games against rated opponents, 2017–2025

#OpponentRating
1, Kanwar Sethi, Sep 2025 · 22nd St Amant Memorial Tournament - 2000 and Over, 2177
2, Sanat Singhal, Sep 2025 · 22nd St Amant Memorial Tournament - 2000 and Over, 1929
3, Xiaoshan Chen, Aug 2025 · 2nd Koltanowski Memorial Tournament - 1600-1999, 1829

Event timeline · Classical

10 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

YearGamesScoreAvg oppTPR
20258619362129
20228316621575
20197018421042
2018201871—
2017201719—

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

Rated near William Obrien · Classical · November list, all players

World

  1. #=146868Pavel Novosad1877
  2. #=146868Milorad Obradovic1877
  3. #=146868William Obrien1877
  4. #=146868Bin Manjil Olid1877
  5. #=146868Omer Albasha Taha1877

United States

  1. #=5067Kevin Liu1877
  2. #=5067Rahul Desirazu1877
  3. #=5067William Obrien1877
  4. #=5067Alexander Gross1877
  5. #=5067Kisna Matta1877

Live rating: FIDE’s November list plus every rated game played since. Not affiliated with FIDE.