Event: Lewisham Summer Cup

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Opponent	Rating	Result
David Hamilton	1537	1 - 0
Kushal Jakhria	2060	0 - 1
Kenroy Smith	1641	1 - 0

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

1879 = (5238 + 400 * (2 - 1)) / 3)