Event: Div1

PDF Excel

Opponent	Rating	Result
D Philip Morgan	147	1 - 0
Ray J Forey	177	½ - ½
Ranjit Nath	155	½ - ½

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

293 = (479 + 400 * (1 - 0)) / 3)