Event: Durham League Division 1

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Opponent	Rating	Result
Ken P Neat	0	0 - 1
Kevin J Wilson	0	½ - ½
AD Tony Shires	0	0 - 1
Dave Patterson	0	0 - 1
Luke Remus Elliot	0	0 - 1

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

-320 = (0 + 400 * (0 - 4)) / 5)