Event: Knackered Knight

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Opponent Rating Result
David M Rose 1550 0 - 1
David A Hallen 1491 0 - 1
S Ali Arshad 1193 0 - 1
Ewan F Corden 1088 0 - 1
Harry James 1148 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

894 = (6470 + 400 * (0 - 5)) / 5)

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