Event: Wiseman Hurley Open 2022

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Opponent	Rating	Result
Ben Ellington	1707	0 - 1
Brian R Ewart	1841	0(def) - 1
Steve Winstanley	1526	0 - 1
B Wilson	1437	0 - 1
John Pickering	0	0 - 1
Nathan Haddy	1524	½ - ½
Alistair Bond	1666	0 - 1

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

977 = (7860 + 400 * (0 - 5)) / 6)