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    vs.      
Petr Haka is tied in the series against Jan Ruess, 1-1.

event round table player one result player two
Grand Prix Zurich 2004395Haka, Petr (1548)Won 2-1Ruess, Jan (1576)
Grand Prix Hasselt 2006158Haka, Petr (1819)Lost 1-2Ruess, Jan (1864)