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Mark O`hallahan

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IRL · 31 yrs · K=40 · Peak 1774 (By Nov 2025)

Best performance: 1763 at Cork Congress 2025 - Majors(Best of 2025)

World #=87543 live, down 2695#84,848 publishedIreland #=415

OCT26 Rating

1774

Live Rating

1774.0

Change

0.0

Games Played

0

How live ratings are calculated

Rating History · Classical

Loading chart…
Official classical rating by month
ListRatingChange
Oct 202617740
Sep 202617740
Aug 202617740
Jul 202617740
Jun 202617740
May 202617740
Apr 202617740
Mar 202617740
Feb 202617740
Jan 202617740
Dec 202517740

Classical games since the October list

No rated standard games this rating periodsince the OCT26 list (Oct 1, 2026)

Last playedScore
Cork Congress 2025 - MajorsOct 3, 2025 – Oct 5, 2025TPR 17632½/5

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

Event timeline · Classical

1 event

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 Mark O`hallahan · Classical

World

  1. #=87543Alan White1774.0
  2. #=87543Jack Bradshaw1774.0
  3. #=87543Mark O`hallahan1774.0
  4. #=87543Md.Amin1774.0
  5. #=87543Aditya Kiran Borgohain1774.0

Ireland

  1. #=415Alan White1774.0
  2. #=415Jack Bradshaw1774.0
  3. #=415Mark O`hallahan1774.0
  4. #418John M. Buggy1772.8
  5. #419Georgii Bereznev1772.0

Live ratings projected from the OCT26 published list · Not affiliated with FIDE