Event: St Andrews Intermediate Tournament

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Opponent	Rating	Result
Alison Hyde	1200	1 - 0
Darren Tomlinson	1076	1 - 0
Cameron Johnson	1541	0 - 1
Eddie Burrell	850
David Atkin	1326
Ronald Botham	1112
David P Thrun	1345
Paddy McLeary	1200

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

1406 = (3817 + 400 * (2 - 1)) / 3)