Event: Dons Christmas Allegro

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Opponent	Rating	Result
John A Wood	1983	1 - 0
David J Twitchell	1899	1 - 0
Tal Wood	0	1 - 0

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

1694 = (3882 + 400 * (3 - 0)) / 3)