Event: Crewe Longplay - Division 2

PDF Excel

Opponent	Rating	Result
George P Jelliss	73	1 - 0
Reinhard Haack	90	½ - ½
Lukasz Michalek	88	0 - 1
Adam Fields	89	½ - ½
Les Hall	80	½ - ½
Nigel Gardner	85	½ - ½
Josh Cross	40	½ - ½
Michael Keenan	70	0 - 1

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

27 = (615 + 400 * (1 - 2)) / 8)