Event: 480 Max

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Opponent Rating Result
Lawrence F Hayden 141 1 - 0
Tony Preece 127 1 - 0
Lawrence F Hayden 141 ½ - ½
Tony Preece 127 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

434 = (536 + 400 * (3 - 0)) / 4)

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