Event: OTB HBZGP 8v8

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Opponent	Rating	Result
Davi Diniz Afonso	1720	0 - 1
Istvan Karacsony	1960	0 - 1

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

1440 = (3680 + 400 * (0 - 2)) / 2)