Event: OTB rapid games

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Opponent	Rating	Result
Daniel Phillips	0	1 - 0
Riyad Bensoussane	0	½ - ½
James M G Toon	0	0 - 1
Shyam Muralidhara	0	1 - 0
Tauseef Rahman	0	0 - 1

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

0 = (0 + 400 * (2 - 2)) / 5)