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

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