Event: Week 1

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Opponent Rating Result
S Ali Arshad 1215 0 - 1
Ewan Hiscock 800 1 - 0
Peter Hiscock 1211 1 - 0
David E Shiers 1683 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1227 = (4909 + 400 * (2 - 2)) / 4)

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