Event: Ipswich Club Championship

PDF Excel

Opponent	Rating	Result
Alonso Paez	0	½ - ½
Ken Lunn	0	½ - ½
Andrew Shephard	0	1 - 0
Les J Jones	0	1 - 0
Simon Riley	0	½ - ½

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

160 = (0 + 400 * (2 - 0)) / 5)