Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
Keith Sansom	91	1 - 0
Rob Gallagher	157	½ - ½
Colin Wilks	102	1 - 0
Roy Ellames	198	0 - 1
Paul A Evans	181	0 - 1

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

146 = (729 + 400 * (2 - 2)) / 5)