Event: North Norfolk Championship (85|10)

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Opponent	Rating	Result
David L Jones	1497	0 - 1
Adam Blackbourn	1624	0 - 1
Alan F Page	1725	0 - 1

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

1215 = (4846 + 400 * (0 - 3)) / 3)