Event: Pre-season Games

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Opponent	Rating	Result
Ewan F Corden	1277	1 - 0
Owen Frodsham	1050	1 - 0
Esme A Shiers	1000	1 - 0

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

1509 = (3327 + 400 * (3 - 0)) / 3)