Event: Division Five

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Opponent Rating Result
Geoff Stokes 1200 1 - 0
Peter Gavin 1438 0 - 1
Andrew Ashton 1290 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1176 = (3928 + 400 * (1 - 2)) / 3)

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