Event: Lytham Club Championship

PDF Excel

Opponent	Rating	Result
Graham Taylor	118	1 - 0
Colin Wilks	102	1 - 0
Paul A Evans	181	½ - ½
David E Aspinall	139	1 - 0
Robert Tinton	125	1 - 0

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

453 = (665 + 400 * (4 - 0)) / 5)