Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
Philip N Raynor	142	1 - 0
Roy Ellames	198	0 - 1
David E Aspinall	139	0 - 1
John Regan	112	1 - 0
John G Cooper	165	0 - 1

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

71 = (756 + 400 * (2 - 3)) / 5)