Event: Mamhead league

PDF Excel

Opponent	Rating	Result
Rob A Oughton	127	½ - ½
Oliver E Wensley	172	½ - ½
Alan W Brusey	158	0 - 1

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

19 = (457 + 400 * (0 - 1)) / 3)