Event: Open

Opponent Rating Result
Mark L Hebden 2448 0 - 1
Robert K Taylor 1905 1 - 0
Andrew J Morley 2033 0 - 1
Roland E Graf 1846 1 - 0
Alan Agnew 2185 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2003 = (10417 + 400 * (2 - 3)) / 5)

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