Event: Richardson Cup

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Opponent Rating Result
Jamie Woodhouse 1622 0 - 1
Oliver Brennan 1797 ½ - ½
Peter W Hempson 1902 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1640 = (5321 + 400 * (0 - 1)) / 3)

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