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Jonathan Si Seng Ong

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AUS · 16 yrs · K=40 · Peak 1850 (Aug 2026)

Best performance: 1977 at 2024 Norths Rapid Championship(Best of 2024)

World #=39319 live, down 1671#37,648 publishedAustralia #=185

OCT26 Rating

1850

Live Rating

1850.0

Change

0.0

Games Played

0

How live ratings are calculated

Rating History · Rapid

Loading chart…
Official rapid rating by month
ListRatingChange
Oct 202618500
Sep 202618500
Aug 20261850+19
Jul 202618310
Jun 20261831+14
May 202618170
Apr 202618170
Mar 202618170
Feb 202618170
Jan 202618170
Dec 202518170
Nov 202518170

Rapid games since the October list

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

Last playedScore
2026 NSW RapidJul 19TPR 18945/7

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

Event timeline · Rapid

2 of 9 events · All years

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.

  • 2026 NSW Rapid1894
    Jul 2026Swissfederation source
    Best of 2026Score 5/7Opp avg 1822Start 1831
  • 2026 Norths Allegro1859
    May 2026Swissfederation source
    #2 in 2026Score 5½/8Opp avg 1757Start 1817

Rated near Jonathan Si Seng Ong · Rapid

World

  1. #=39319Adria Medina Diez1850.0
  2. #=39319Jose Carlos Martinez Bastida1850.0
  3. #=39319Jonathan Si Seng Ong1850.0
  4. #=39319Saeid Mohammad Rezaei1850.0
  5. #=39319Gonzalo Calla1850.0

Australia

  1. #184Tony Tosevski1851.0
  2. #=185Alain Pardoen1850.0
  3. #=185Jonathan Si Seng Ong1850.0
  4. #187Charles Huang1848.0
  5. #188Olamide Fasakin1847.0

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