Event: Division 2

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Opponent	Rating	Result
David H Watkin	1485	1 - 0
Chris M Cox	1607	½ - ½
Brian Homewood	1593	½ - ½

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

1695 = (4685 + 400 * (1 - 0)) / 3)