Event: OTB Club Championship

Opponent Rating Result
Istvan Karacsony 1825 0 - 1
Ibrahim Ali 1000 1 - 0
Michael GA Wilson 1678 0 - 1
Ivan Hutcheson 1499 ½ - ½
Albert Merdinian 0 1 - 0
Terry D Whitton 1897 0 - 1
Ben Harte 1732 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1262 = (9631 + 400 * (2 - 4)) / 7)

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