Event: Division 1

Opponent Rating Result
Thivan M Gunawardana 1992 ½ - ½
David L Haydon 2361 0 - 1
Alan Scrimgour 2014 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1989 = (6367 + 400 * (0 - 1)) / 3)

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