Event: Division 2

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Opponent	Rating	Result
Shaun Cope	1788	½ - ½
Lewis Jeffrie	1400	½ - ½
David J Walton	1615	1 - 0

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

1734 = (4803 + 400 * (1 - 0)) / 3)