Event: Summer Rapid Play

PDF Excel

Opponent	Rating	Result
Ahmed Haseeb	0	1 - 0
Gareth Williams	1317	0 - 1
michael Jones	1746	0 - 1
David Firth	1497	0 - 1
Leo Stefanakis	986	0 - 1
Edward James	1163	0 - 1
James Walker	1474	0 - 1

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

883 = (8183 + 400 * (1 - 6)) / 7)