Event: Season 2022/23 Championship

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Opponent	Rating	Result
Andy J Bagley	1869	0 - 1
Andrew Parker	973	1 - 0
Keith J Riach	1689	1 - 0
Warren B Dennison	1939	1 - 0
Clive W Davies	1873	0 - 1
Samuel J Playford	1705	1 - 0
Peter J Clark	1679	0 - 1

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

1732 = (11727 + 400 * (4 - 3)) / 7)