Event: Division 2 Cup

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Opponent	Rating	Result
Barry Marshall	1823	½ - ½
Ben Moran	1501	1 - 0
Richard Sanger	1700	0 - 1

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

1675 = (5024 + 400 * (1 - 1)) / 3)