Event: Camberley Chess Club Championship 2023

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Opponent	Rating	Result
Steve Harley	1742	0 - 1
Mark Payne	1831	0 - 1
A Sandy McCubbin	1503	0 - 1
Sayed Hajaj	1393	0 - 1
Brian Rushby	1311	0 - 1

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

1156 = (7780 + 400 * (0 - 5)) / 5)