Event: Div 4 - Athenaeum Cup

Opponent Rating Result
Oliver Gray 1470 1 - 0
Craig Chatterton 1578 ½ - ½
Brian England 0 1 - 0
Richard Dawson 1499 1 - 0
George D Boothman 1630 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1475 = (6177 + 400 * (3 - 0)) / 5)

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