Event: Division 4

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Opponent	Rating	Result
Keith Milner	1025	1 - 0
Stephen Gaskell	1025	0 - 1
David Gaskell	1025	1 - 0

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

1158 = (3075 + 400 * (2 - 1)) / 3)