Event: Open County Championship

PDF Excel

Opponent	Rating	Result
Alan B Merry	2515	0 - 1
Stephen C Ledger	2145	1 - 0
Declan Shafi	2288	0 - 1

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

2183 = (6948 + 400 * (1 - 2)) / 3)