Event: Beverley Club Championship

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Opponent	Rating	Result
Derek A Sheppard	135	½ - ½
Peter T Perkins	118	½ - ½
Thomas L Hackett	134	½ - ½
Steve Tomlinson	89	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

119 = (476 + 400 * (0 - 0)) / 4)