Event: A Division

PDF Excel

Opponent	Rating	Result
Mariana Mosnegutu	188	0 - 1
Nicholas Webb	139	1 - 0
Brian R Myers	144	½ - ½
Stephen Ormerod	157	½ - ½
Graham W Matthews	127	½ - ½
Peter McKay	130	½ - ½
Joe McGinnis	0	½ - ½

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

126 = (885 + 400 * (1 - 1)) / 7)