Event: Division 1

Opponent Rating Result
A Clive Walley 1902 0 - 1
Tristram De Piro 1917 ½ - ½
Alexandru Moldovan 1902 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1907 = (5721 + 400 * (1 - 1)) / 3)

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