Event: Rapidplay League

PDF Excel

Opponent	Rating	Result
Armand Catz	163	0 - 1
Armand Catz	164	½ - ½
Armand Catz	163	0 - 1
Armand Catz	164	0 - 1
William O'Rourke	158	1 - 0
Tim Hilton	177	½ - ½
Martyn Hamer	189	0 - 1
Tim Hilton	177	½ - ½
William O'Rourke	158	1 - 0
Tim Hilton	177	0 - 1
Martyn Hamer	189	0 - 1
Tim Hilton	177	0 - 1

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

5 = (2056 + 400 * (2 - 7)) / 12)