Event: Division 2

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Opponent Rating Result
Rob Hearne 1948 0 - 1
David C Egginton 1705 ½ - ½
David C Osborne 1970 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1608 = (5623 + 400 * (0 - 2)) / 3)

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