Event: 400 Max

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Opponent	Rating	Result
Jamie Steward	110	0 - 1
Ahmed Abdalkreem	60	1 - 0
Richard F Collett	84	0 - 1
Joe Kadar	88	0 - 1
Jamie Steward	110	0 - 1
Ahmed Abdalkreem	60	1 - 0
Richard F Collett	84	1 - 0
Joe Kadar	88	0 - 1

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

-15 = (684 + 400 * (3 - 5)) / 8)