Event: Leyland Juniors vs Wigan Juniors Friendly - Extra Games

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Opponent	Rating	Result
Saanvi Dembla	0	0 - 1
Saanvi Dembla	0	0 - 1
Matt Pancutt	0	0 - 1

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

-400 = (0 + 400 * (0 - 3)) / 3)