Event: South Cheshire Shield

PDF Excel

Opponent	Rating	Result
David Lambton	1724	0 - 1
Oskar Jarzynski	1396	0 - 1
Jim Leech	1125	1 - 0

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

1282 = (4245 + 400 * (1 - 2)) / 3)