Event: Division 1 - Open

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Opponent	Rating	Result
Phil J McConnell	1624	0 - 1
Jack Wills	1676	0 - 1
Mark Furnevall	1909	1 - 0

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

1603 = (5209 + 400 * (1 - 2)) / 3)