Event: Northamptonshire Silver King League

PDF Excel

Opponent	Rating	Result
Tim Broad	1555	0 - 1
Joe Houghton	0	0 - 1
Joe Houghton	0	0 - 1
David Caldwell	0	1 - 0
Robert Mills	1338	½ - ½

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

419 = (2893 + 400 * (1 - 3)) / 5)