Event: Division 1 - Davy Trophy

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Opponent Rating Result
John R Mercy 157 ½ - ½
David Ashcroft 155 ½ - ½
Ken A McIntosh 154 0 - 1
Ken A McIntosh 150 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

54 = (616 + 400 * (0 - 1)) / 4)

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