Event: Online League - Division 1

PDF Excel

Opponent	Rating	Result
David N Roberts	0	0 - 1
Michael Cain	0	0 - 1
George Neale	0	0 - 1
William F Tracey	0	0 - 1

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

-400 = (0 + 400 * (0 - 4)) / 4)