Event: Folkestone Club Championship

PDF Excel

Opponent	Rating	Result
Vincent Larson	1315	0 - 1
Chris Cummins	1166	1 - 0
David Erwee	1425	0 - 1
Thomas Milligan	1428	0 - 1

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

1134 = (5334 + 400 * (1 - 3)) / 4)