Martin Sinner ( born February 7, 1968 in Koblenz ) is a former German tennis player.
Sinner 1988 professional tennis player and won in the same year on the side of Michael Stich, the Challenger tournaments in Fürth and Neu-Ulm. The following year he won with stab at Intersport Heilbronn Open and Salzburg. In 1990, he won with a victory over Wayne Ferreira in Pretoria his first individual title on the Challenger Tour. In the following years he played mainly Challenger Tournaments and celebrated there more singles and doubles titles. At the beginning of the 1990s, however, he was thrown back by a lengthy ligament injury. 1995 was his most successful year when he won two tournaments on the ATP World Tour. In Copenhagen he needed three sets against Andrei Olchowski, at the South African Open he defeated in the final Guillaume Raoux in straight sets, he also stood on the side of Joost Winnink also in the doubles final. In that year, he reached his highest position 42 listing in the tennis world rankings. His best individual result at a Grand Slam tournament was in 1996 reaching the second round of the Australian Open.
Between 1985 and 1998 he played in the tennis league. In the 1990s he was a member of the men's team of Etuf food, with which he was able to achieve, among others, Carl -Uwe Steeb and with Eric Jelen the German championship in 1997. He also stood in 1996 and 1998 in the squad of German Davis Cup team, but had no use.
In 2010, he coached the juniors in Canada. Since 2011, Sinner has worked as a coach for the Swiss Tennis Association.