Event: Championship 2023-4

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Opponent	Rating	Result
Daniel Birt	0
Andrew Hardy	1417
Ben Borthwick	1471	0 - 1
Karl Isaac	1315
Paul Castledine	1522
Kieran Johnston	1777
Philip Eastlake	1782	0 - 1
Darren McCarthy	0
George J Ellames	1886	0 - 1
Stephen O’Neill	1540	½ - ½
Charles Greer	1485

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

1370 = (6679 + 400 * (0 - 3)) / 4)