Event: Plummer Trophy

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Opponent	Rating	Result
Simon Wrigley	0	0 - 1
Mathias Keiller	1262	½ - ½
Paul R Selby	1756	0 - 1

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

739 = (3018 + 400 * (0 - 2)) / 3)