AUGUST 11 2007 23:24h
The highest profile couple in tennis have broken off their engagement.
A spokesman for the ATP said on Saturday: "Radek asked me to pass on a message announcing that he and Martina Hingis have split up, they will remain good friends."
The pair became engaged last November when Stepanek proposed to Hingis in Prague.
Stepanek was beaten 7-6 6-2 by world number one Roger Federer in the semi-finals of the Montreal Masters on Saturday.