Event: Season 1 Division 2

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Opponent	Rating	Result
Douglas J Smith	0	0 - 1
Jeremy Revell	0	1 - 0
Ravi Wariyar	0	½ - ½
Stuart Skelsey	1881	½ - ½
Simon Matthews	1749	1 - 0

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

806 = (3630 + 400 * (2 - 1)) / 5)