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Sean Michael Duffy

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USA · 23 yrs · K=40 · Peak 1922 (Dec 2025)

Best performance: 1960 at 34th Annual Chicago Open - U2100(Best of 2025)

World #=67266 live, down 749#66,517 publishedUnited States #=1897

NOV26 Rating

1834

Live Rating

1834.0

Change

0.0

Games Played

0

How live ratings are calculated

Rating History · Classical

Loading chart…
Official classical rating by month
ListRatingChange
Nov 202618340
Oct 202618340
Sep 202618340
Aug 202618340
Jul 202618340
Jun 202618340
May 202618340
Apr 202618340
Mar 20261834+1
Feb 20261833-1
Jan 20261834-88
Dec 20251922+1

Form · Classical

oldest → latest

From 16 classical games on record, the latest on Dec 29, 2025.

Classical games since the November list

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

Last playedScore
50th annual Eastern Open - U2200Dec 26, 2025 – Dec 29, 2025TPR 17112½/5

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

Best wins · Classical

From 14 rated classical games against rated opponents, 2025

#OpponentRating
1, Rebecca Cortez, May 2025 · 34th Annual Chicago Open - U2100, 1887
2, Aaron C Jing, May 2025 · 34th Annual Chicago Open - U2100, 1878
3, Siddharth Santosh, May 2025 · 34th Annual Chicago Open - U2100, 1753

Event timeline · Classical

3 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.

Rated near Sean Michael Duffy · Classical

World

  1. #=67266Ellery Zhang1834.0
  2. #=67266Samuel Francis Brandzen1834.0
  3. #=67266Sean Michael Duffy1834.0
  4. #=67266Alexander Wezensky1834.0
  5. #=67266Alex Chow1834.0

United States

  1. #=1897Ellery Zhang1834.0
  2. #=1897Samuel Francis Brandzen1834.0
  3. #=1897Sean Michael Duffy1834.0
  4. #=1897Alexander Wezensky1834.0
  5. #=1897Alex Chow1834.0

Live ratings projected from the NOV26 published list · Not affiliated with FIDE