Event: Rosser Rapid

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Opponent	Rating	Result
Robert JV Davies	1787	1 - 0
Karl Bowden	2350	0 - 1
Russell Fisher	1475	0 - 1

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

1737 = (5612 + 400 * (1 - 2)) / 3)