Event: Hillingdon Div 3

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Opponent	Rating	Result
Jack Mills	0	½ - ½
Soumya Nargund	1353	1 - 0
Alan R Marshall	1553	1 - 0

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

1235 = (2906 + 400 * (2 - 0)) / 3)