Event: Division Two

Opponent Rating Result
Fred S Dickson 1678 1 - 0
Peter L Loach 1652 ½ - ½
Roy A Lawrence 1762 ½ - ½
Bruno A Dos Santos Silva 1821 0 - 1
Chris Williamson 1431 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1669 = (8344 + 400 * (1 - 1)) / 5)

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