Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
Colin Wilks	102	0 - 1
John Cox	85	1 - 0
Patrick N Coleman	108	1 - 0
Rob Gallagher	157	0 - 1
Dennis Davies	109	1 - 0

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

192 = (561 + 400 * (3 - 2)) / 5)