Event: SCL Div 2

Opponent Rating Result
Michael J Hardman 1975 0 - 1
Matthew Coldwell 1744 0 - 1
Graham Stuart 1767 1 - 0
Matthew Deacon 1873 0 - 1
Paul Northcott 1975 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1627 = (9334 + 400 * (1 - 4)) / 5)

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