Event: Lewisham Summer Cup

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Opponent	Rating	Result
David E Brown	1822	0 - 1
David Hamilton	1537	1 - 0
Rudy Padovan	1828	0 - 1

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

1596 = (5187 + 400 * (1 - 2)) / 3)