Event: Division 1

Opponent Rating Result
Aaron Rich 2050 ½ - ½
Richard M Cowan 1959 1 - 0
Paul M Barber 1941 ½ - ½
Steve R Hodge 2056 ½ - ½
Richard D Hardy 1961 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2073 = (9967 + 400 * (1 - 0)) / 5)

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