Career
When Sorensen qualified for the 1977 Wimbledon Championships, he became the first Irishman to appear in the main draw of a Grand Slam in the Open Era. He was beaten in the opening round by Rod Laver. In 1980 he was a quarter-finalist at the Grand Prix event in Metz, defeating Craig Wittus and Kim Warwick en route.
Later that year, Sorensen played at Wimbledon for a second time, but was again unable to reach the second round, losing to Patrice Dominguez.
He had one of the best wins of his career in the 1984 German Open, where he upset Sammy Giammalva Junior. During his career and for another 20 years after, Sorensen lived in Germany, but has since returned to Ireland.