Event: Wiseman Hurley Open 2022

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Opponent	Rating	Result
Roger G Williamson	2235	0 - 1
Sean Kane	1628	½ - ½
GS Cannon	1501	½ - ½
Ben Gannon	1426	1 - 0
Peter Jenner	1586	0 - 1
John Pickering	0	1 - 0
Ben Ellington	1707	0 - 1

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

1383 = (10083 + 400 * (2 - 3)) / 7)