Event: 4-Board Division 1

Opponent Rating Result
John Thackray 1966 ½ - ½
Keith Porteous 1673 ½ - ½
John Thackray 1966 0 - 1
Jeff Foster 1570 1 - 0
F Hal Jorna 1633 ½ - ½
Tim M Turner 1884 ½ - ½
Bryan Hesler 1751 1 - 0
John Scotter 1558 1 - 0
Tim M Turner 1884 ½ - ½
Hussam Al Haidar 1506 1 - 0
Keith Thompson 1924 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1829 = (19315 + 400 * (4 - 2)) / 11)

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