Event: MCA Division 4

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Opponent	Rating	Result
John Lawton	1488	1 - 0
Natasha May	1380	½ - ½
Paul Capstick	1272	1 - 0

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

1647 = (4140 + 400 * (2 - 0)) / 3)