Event: Hillingdon Div 3

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Opponent	Rating	Result
David Housego	1378	½ - ½
Karanvir Singh	1820	1 - 0
Gregory Barseghyan	1651	½ - ½
David Housego	1376	1 - 0
Ovidiu Alexa	0	1 - 0
Matthieu Fulhaber	1547	½ - ½
David JR Walker	1191	1 - 0

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

1509 = (8963 + 400 * (4 - 0)) / 7)