Event: Division 2

PDF Excel

Opponent	Rating	Result
Jon AN Lawrance	155	0 - 1
Martin Pettinger	0	1 - 0
Peter Harbott	163	0 - 1
Tim Pavlovic	171	½ - ½
Michael J Reddie	143	½ - ½
James M Wheeler	158	0 - 1
Michael J Hamilton	169	0 - 1

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

-34 = (959 + 400 * (1 - 4)) / 7)