Event: Beverley Club Championship

Opponent Rating Result
Peter T Perkins 120 ½ - ½
David J Gibson 114 1 - 0
Alec Grice 138 1 - 0
Thomas L Hackett 135 1 - 0
Derek A Sheppard 135 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

368 = (642 + 400 * (3 - 0)) / 5)

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