Event: Division RP1

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Opponent Rating Result
Steve Harley 1684 0 - 1
Roger P Newman 1617 1 - 0
Steve Harley 1684 ½ - ½
Roger P Newman 1617 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1651 = (6602 + 400 * (1 - 1)) / 4)

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