Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
John Cox	85	1 - 0
Paul A Evans	181	0 - 1
Dennis Davies	109	1 - 0
Keith Sansom	91	1 - 0
Roy Ellames	198	0 - 1

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

213 = (664 + 400 * (3 - 2)) / 5)