Event: Division 3

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Opponent	Rating	Result
Alan Ticehurst	1580	0 - 1
Joe Parker	1283	½ - ½
Guy Turvey	1460	0 - 1

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

1174 = (4323 + 400 * (0 - 2)) / 3)