Event: North Norfolk Championship (85|10)

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Opponent	Rating	Result
Chris Perkins	1690	½ - ½
David P Jones	1409	1 - 0
Tony R Larner	1490	1 - 0
Alan F Page	1746	1 - 0
Michael J Gibbons	1884	½ - ½
David L Jones	1487	1 - 0
Richie Allen	1416	1 - 0
Jacob Mulligan	1143	0 - 1

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

1733 = (12265 + 400 * (5 - 1)) / 8)