Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
John Cox	82	1 - 0
Darren Pickering	0	½ - ½
Rob Gallagher	158	½ - ½
Philip N Raynor	145	½ - ½
David E Aspinall	140	½ - ½

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

185 = (525 + 400 * (1 - 0)) / 5)