Event: Durham League Division B

PDF Excel

Opponent	Rating	Result
Josh Smith	1598	0 - 1
James Urwin	1388	0 - 1
Felix Watts	1401	1 - 0
Graham R Marshall	1452	1 - 0
William Bartram	1876	0 - 1
Andy Proudfoot	1531	0 - 1
Nigel Hall	1975	½ - ½

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

1489 = (11221 + 400 * (2 - 4)) / 7)