Event: Division 4

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Opponent	Rating	Result
Michael Stockham	1716	½ - ½
Adrian DP Waldock	1643	0 - 1
Mathieu Clay	0	0 - 1

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

853 = (3359 + 400 * (0 - 2)) / 3)