Event: Rapidplay All-play-all

PDF Excel

Opponent	Rating	Result
Adrian Bond	84	0 - 1
Ian R Saint	0	1 - 0
Mark J Leonard	159	0 - 1
Wieslaw Stanicki	74	0 - 1
Bernadette Marie	0	0 - 1

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

-177 = (317 + 400 * (1 - 4)) / 5)