What is Jürgen Melzer's career-high doubles ranking?
World No. 6
World No. 1
World No. 10
World No. 8
Answer
Jürgen Melzer's career-high doubles ranking was World No. 6. He achieved this ranking on 19 July 2010. He has won a total of 10 ATP Tour doubles titles, including two Grand Slam doubles titles at the 2010 French Open and the 2011 US Open.