Event: Dudley Townshend Trophy

PDF Excel

Opponent	Rating	Result
Ian M Truscott	132	0 - 1
Derek Green	102	1 - 0
Paul Barrett	116	0 - 1

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

-17 = (350 + 400 * (1 - 2)) / 3)