Event: Open County Championship

PDF Excel

Opponent	Rating	Result
Declan Shafi	2300	1 - 0
Alan B Merry	2544	½ - ½
Stephen C Ledger	2097	0 - 1

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

2314 = (6941 + 400 * (1 - 1)) / 3)