Event: League Division 1

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Opponent	Rating	Result
Paul Howden	1666	1 - 0
Craig Magee	1859	½ - ½
Ben Strutt	1903	0 - 1

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

1809 = (5428 + 400 * (1 - 1)) / 3)