Event: Division 4

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Opponent Rating Result
John Moughtin-Leay 1424 0 - 1
Stuart Andrews 1155 0 - 1
Stuart Andrews 1151 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1110 = (3730 + 400 * (1 - 2)) / 3)

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