Event: Div 4 - Athenaeum Cup

Opponent Rating Result
John N Stevens 1593 ½ - ½
Stephen Gibson 1505 0 - 1
Brian England 0 1 - 0
Oliver Gray 1470 0 - 1
Michael W Simmons 1152 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

984 = (5720 + 400 * (1 - 3)) / 5)

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