Event: Premiership

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Opponent Rating Result
Jonathan WR Underwood 188 0 - 1
Mark V Abbott 166 ½ - ½
William Claridge-Hansen 227 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-73 = (581 + 400 * (0 - 2)) / 3)

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