We have a Patreon! Click here to become a patron, or read the blog to learn more!
    vs.      
Jonas Koestler leads the series against Helmut Summersberger, 1-0-1.

event round table player one result player two
Grand Prix Bochum 20101177Koestler, Jonas (1793)Won 2-1Summersberger, Helmut (1997)
Grand Prix Pittsburgh 2011165Koestler, Jonas (1997)IDSummersberger, Helmut (1987)