Event: Division 2 - Weston Trophy

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Opponent	Rating	Result
Alexander Pelosof	0	0 - 1
Mick McManus	129	0 - 1
Tim Humphries	154	0 - 1
Norman A Wragg	136	½ - ½
Geoff Frost	161	0 - 1
Alan S McIntosh	148	½ - ½
Bryan Wood	150	0 - 1
Peter Morton	145	1 - 0
Mick McManus	135	1 - 0
Alejandro Lopez-Martinez	0	1 - 0
Daniel Gottschalk	0	0 - 1

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

-4 = (1158 + 400 * (3 - 6)) / 11)