Event: Harrogate Evening League 2022 season

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Opponent	Rating	Result
David Wells	1850	½ - ½
Jacob Smith	0	1 - 0
William Boothman	0	1 - 0
John Swiers	1374	1 - 0

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

1106 = (3224 + 400 * (3 - 0)) / 4)