Event: Stowmarket Club Championship 22-23

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Opponent	Rating	Result
Ray Firman	1139	½ - ½
Adrian Hall	1050	0 - 1
Richard Caves	1432	0 - 1
Terry Robinson	1516	0 - 1
James Irwin	1766	0 - 1

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

1061 = (6903 + 400 * (0 - 4)) / 5)