Event: Winchester

PDF Excel

Opponent	Rating	Result
Josh George	0	1 - 0
Xerxes Gulabani	1346	0 - 1
Tahmeed Yahia	0	0 - 1

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

315 = (1346 + 400 * (1 - 2)) / 3)