Event: Division 2 Cup

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Opponent	Rating	Result
Ashley Carr	1507	1 - 0
Stephen Donkin	1532	½ - ½
Rajan Mistry	1591	0 - 1

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

1543 = (4630 + 400 * (1 - 1)) / 3)