Event: Ramsgate Southwood Cup

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Opponent	Rating	Result
Brian J Westover	159	0 - 1
Brian J Westover	159	0 - 1
Malcolm Snashall	110	½ - ½
Malcolm Snashall	110	½ - ½

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

-66 = (538 + 400 * (0 - 2)) / 4)