Event: Division 1

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Opponent Rating Result
Robert Petrovai 1746 ½ - ½
Ivan J Myall 1974 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1660 = (3720 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Stephen Coughlan 2032 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2032 = (2032 + 400 * (0 - 0)) / 1)