Event: County Championship

PDF Excel

Opponent	Rating	Result
Andrew T Watson	0	1 - 0
Scott Merriman	0	1 - 0
Nicholas Lees	0	0 - 1
Bernard Pratten	0	1 - 0
John Grasham	0	1 - 0

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

240 = (0 + 400 * (4 - 1)) / 5)