Event: Richardson Cup

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Opponent Rating Result
Peter Cooper 130 1 - 0
Steven J Burke 166 ½ - ½
Ken Hunter 144 0 - 1
Ewan Cormack 192 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

158 = (632 + 400 * (1 - 1)) / 4)

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