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    vs.      
Alexander Mertins is tied in the series against Florian Koch, 1-1.

event round table player one result player two
Grand Prix Warsaw 20187166Mertins, Alexander (1946)Lost 0-2Koch, Florian (1809)
Grand Prix Prague 20199701Mertins, Alexander (1932)Won 2-1Koch, Florian (1828)