John Costello

IOM · 60 yrs · K=20 · Peak 1832 (Jun 2026)

Best performance: 2022 at 2025-26 IOMCA Manx Cup and Plate - Pool A(Best of 2025)

World #=76158 live1369#74,789 publishedIsle of Man #9

OCT26 Rating

1806

Live Rating

1806.0

Change

0.0

Games Played

Rating History · Classical

Loading chart…

Classical games since the October list

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

	Last played	Score	TPR
	46th Chess Olympiad Samarkand 2026 OpenSep 16 – Sep 27TPR 1760	3½/10	1760

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

Event timeline · Classical

50 of 52 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.

46th Chess Olympiad Samarkand 2026 Open1760
Sep 2026Teamchess-results.com
#2 in 2026Score 3½/10Opp avg 1926Start 1832
LCU Ennis Shield 2025-2026 Rounds 11—(1)
May 2026Teamfederation source
Score 1/1Opp avg 1818Start 1822
LCU Ennis Shield 2025-2026 Rounds 9-10—(1)
Mar – Apr 2026Teamfederation source
Score 1/1Opp avg 1718Start 1801
2025-26 IOMCA Manx Cup and Plate - Finals—(1)
Mar – Apr 2026Knockoutfederation source
Score 1/1Opp avg 1830Start 1801
LCU Ennis Shield 2025-2026 Rounds 7-8—(1)
Jan – Mar 2026Teamfederation source
Score 1/1Opp avg 1653Start 1797
2025-26 IOMCA Manx Candidates Round 5 - 71677
Mar 2026Round robinfederation source
#3 in 2026Score 1½/3Opp avg 1677Start 1801
2025-26 IOMCA Manx Candidates Round 1 - 41859
Feb 2026Round robinfederation source
Best of 2026Score 3/4Opp avg 1666Start 1811
LCU Ennis Shield 2025-2026 Rounds 5-6—(1)
Dec 2025 – Jan 2026Teamfederation source
Score ½/1Opp avg 1878Start 1788
2025-26 IOMCA Manx Championship Qualifying Round—(1)
Jan 2026Round robinfederation source
Score 0/1Opp avg 1803Start 1797
2025-26 IOMCA Manx Cup Semifinals - Pool B—(2)
Dec 2025 – Jan 2026Round robinfederation source
Score 2½/3Opp avg 1810Start 1788
LCU Ennis Shield 2025-2026 Rounds 3-4—(2)
Oct – Dec 2025Teamfederation source
Score ½/2Opp avg 1822Start 1789
2025-26 IOMCA Manx Cup and Plate - Pool A2022
Nov – Dec 2025Round robinfederation source
Best of 2025Score 2/3Opp avg 1897Start 1794
LCU Ennis Shield 2025-2026 Rounds 1-2—(1)
Sep – Nov 2025Teamfederation source
Score 0/1Opp avg 1925Start 1789
2025 IOM Chess Association - Douglas Championship Rounds 4-71666
Oct 2025Swissfederation source
#2 in 2025Score 2/4Opp avg 1791Start 1789
2025 IOM Chess Association - Douglas Championship Round 1-3—(2)
Sep 2025Swissfederation source
Score 1½/2Opp avg 1871Start 1789
LCU Killane Shield 2025 group stage—(1)
Jun – Jul 2025Teamfederation source
Score 0/1Opp avg 1907Start 1796
Div 3 Ennis Shield 2024-2025 Round 11—(1)
Apr 2025Teamfederation source
Score 0/1Opp avg 1833Start 1805
Div 3 Ennis Shield 2024-2025 Rounds 7-8—(1)
Jan – Feb 2025Teamfederation source
Score 0/1Opp avg 1805Start 1811
Div 3 Ennis Shield 2024-2025 Rounds 5-6—(1)
Nov 2024 – Jan 2025Teamfederation source
Score ½/1Opp avg 1922Start 1817
Div 3 Ennis Shield 2024-2025 Rounds 3-4—(1)
Oct – Nov 2024Teamfederation source
Score 0/1Opp avg 2028Start 1817
Div 3 Ennis Shield 2024-2025 Round 1-2—(2)
Sep – Oct 2024Teamfederation source
Score 1/2Opp avg 1829Start 1824
IOM Olympiad Team versus IOMCA Select Team, Match—(1)
Sep 2024Swissfederation source
Score 0/1Opp avg 1936Start 1824
LCU Ennis Shield Round 11—(1)
May 2024Teamfederation source
Score 1/1Opp avg 1727Start 1828
LCU Ennis Shield Round 8-10—(1)
May 2024Teamfederation source
Score 0/1Opp avg 1806Start 1828
2023 Isle of Man International, Major & Minor1737
Oct – Nov 2023Swissfederation source
Best of 2023Score 3/7Opp avg 1862Start 1720

Rated near John Costello · Classical

World

#=76158Stephen Ormerod1806.0
#=76158Emile Longin-Boissinot1806.0
#=76158John Costello1806.0
#=76158Steffen Morschel1806.0
#=76158Bernd Krueger1806.0

Isle of Man

#7Howard Dobson1846.2
#8Glenn Cross1845.4
#9John Costello1806.0
#10Paul Smith1804.0
#11Brian Woodard1800.6

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