Event: Ipswich Club Championship

Opponent Rating Result
Alonso Paez 0 0 - 1
Martyn Colebrook 0 0 - 1
Philip J Chapman 0 0 - 1
Adam Wilson 0 0 - 1
Thomas Sheat 0 1 - 0(def)
Kenneth Fowler 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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

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