Event: Five Counties Div 2

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Opponent	Rating	Result
John A Westhead	0	0 - 1
Ashwin Ravithas	1503	0 - 1
Gabriele Martellotta	0	0 - 1
Nicolas Holland	0	1 - 0
Barry Scales	1138	0 - 1
Andrew C Wilson	1555	0(def) - 1
Aleksa Markov	1225	½ - ½
Joseph Tran	0	0 - 1

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

324 = (3866 + 400 * (1 - 5)) / 7)