Premise: Jürgen Melzer (born 22 May 1981 in Vienna) is an Austrian tennis player. He reached a career-high singles ranking of world No. 8 in April 2011, and a doubles ranking of world No. 6 in September 2010. He is a left-handed tennis player, but is right-handed in everyday life. He has a younger brother, Gerald Melzer, with whom he has played doubles in several tournaments.
Hypothesis: Melzer also coaches tennis.