Event: Division 4

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Opponent	Rating	Result
Paul W O'Brien	1649	0 - 1
Terry Hoxey	1961	0 - 1
Jonathan Taylor	1554	1 - 0

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

1588 = (5164 + 400 * (1 - 2)) / 3)