Robert Kroll

Robert Kroll is a German former professional tennis player.
Born in Bucholz, a town near Hamburg, Kroll played Bundesliga tennis for Rot-Weiß Hagen and competed briefly on the professional tour in the early 1990s.
Kroll had a career high singles ranking of 441 in the world, with ATP Tour main draw appearances at the 1993 Vienna Open and 1994 German Open, both times as a qualifier.
A former training partner of Martina Hingis, Kroll now runs a laser therapy practice in Hamburg, specialising in the treatment of tinnitus.