Event: Essex OL U1500 Championship

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Opponent Rating Result
Laurence Duffy 1500 0 - 1
Ishita Singh 1126 0 - 1
Aren Sathish-Kumar 900 0 - 1
John C Staplehurst 1405 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

933 = (4931 + 400 * (0 - 3)) / 4)

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