Event: Division 1

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Opponent	Rating	Result
A Jon Griffith	1842	½ - ½
Arron Barker	1928	1 - 0
Tim M Turner	1849	½ - ½

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

2006 = (5619 + 400 * (1 - 0)) / 3)