Event: Open

Opponent Rating Result
Roland E Graf 1845 1 - 0
Andrew J Morley 2114 ½ - ½
Lewis A Turner 2023 1 - 0
Alan Agnew 2140 ½ - ½
Shabir Okhai 2198 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2144 = (10320 + 400 * (2 - 1)) / 5)

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