Event: Hillingdon Div 2

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Opponent	Rating	Result
Daniil Donskikh	0	1 - 0
Yashvardhan Veeturi	1753	0 - 1
Jason Obihara	1771	½ - ½
Mary Helen Deans	1635	0 - 1
Maximillian Papachristos	1577	0 - 1
Yashvardhan Veeturi	1735	0 - 1

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

1212 = (8471 + 400 * (1 - 4)) / 6)