Event: Division 4

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Opponent Rating Result
Gianmaria Mazzaracchio 0 ½ - ½
Alexander McLeod 0 0 - 1
Gianmaria Mazzaracchio 0 ½ - ½
Ray P Hamilton 1482 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

171 = (1482 + 400 * (0 - 2)) / 4)

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