Event: Morpeth Rated Rapidplay

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Opponent	Rating	Result
Jack Gibson	0	1 - 0
Vic Southern	1633	½ - ½
David M Watson	1443	1 - 0
Phil Eastlake	1784	0 - 1
Martin Seeber	1879	1 - 0

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

1508 = (6739 + 400 * (3 - 1)) / 5)