Event: Ross Cup

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Opponent	Rating	Result
Stephen Crow	1840	0 - 1
Peter Eggleton	1516	½ - ½
Thomas L Hackett	1727	1 - 0

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

1694 = (5083 + 400 * (1 - 1)) / 3)