Event: 400 Max

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Opponent	Rating	Result
Terry W Walker	164	0 - 1
Penny A Wood	94	1 - 0
Wendell S Rawlings	107	0 - 1
Brian Allsop	97	0 - 1
Gareth Hunter	70	1 - 0
John Burke	88	½ - ½
Terry W Walker	164	0 - 1
Penny A Wood	94	0 - 1
Wendell S Rawlings	107	0 - 1
Brian Allsop	97	0 - 1
Gareth Hunter	70	1 - 0
John Burke	88	1 - 0

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

3 = (1240 + 400 * (4 - 7)) / 12)