Event: C Division

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Opponent	Rating	Result
Mark Taylor	1779	½ - ½
Rod Middleton	1668	1 - 0
Tarini Jayawarna	1688	0 - 1

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

1712 = (5135 + 400 * (1 - 1)) / 3)