Event: 4th Western Counties Online Championship

PDF Excel

Opponent	Rating	Result
Sam J Murphy	1564	0 - 1
Jake Martin	1755	0 - 1
Maria Evdokimova	1389	1 - 0

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

1436 = (4708 + 400 * (1 - 2)) / 3)