Event: Division 1

Opponent Rating Result
Yaroslav Orishko 2000 ½ - ½
Peter Coleman 1993 0 - 1
Philip J Hutchings 1927 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1973 = (5920 + 400 * (1 - 1)) / 3)

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