Event: Rapidplay All-play-all

PDF Excel

Opponent	Rating	Result
Adrian Bond	84	0 - 1
Tim F Woodward	144	0 - 1
Nigel Crucefix	85	1 - 0
Wieslaw Stanicki	74	0 - 1
Bernadette Marie	0	1 - 0

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

-3 = (387 + 400 * (2 - 3)) / 5)