Event: Division 2

Opponent Rating Result
Ian N Heppell 1994 ½ - ½
Nasir Rizvi 2119 ½ - ½
Tom A Barton 1935 1 - 0
Mikhail Sedykh 2274 1 - 0
D Ian Calvert 1993 ½ - ½
Peter Finn 2175 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2215 = (12490 + 400 * (2 - 0)) / 6)

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