Event: Beverley Club Championship

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Opponent Rating Result
Peter T Perkins 118 0 - 1
Derek A Sheppard 135 ½ - ½
Esmond Harding 74 0 - 1
Stephen Philp 125 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-87 = (452 + 400 * (0 - 2)) / 4)

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