American tennis professional reached his first top 50 world ranking in July 2012.
He reached a #7 world amateur ranking with a 60-24 record.
He has reached the second round of the Australian Open, Wimbledon and U.S. Open.
He has a younger brother named Christian, who also plays tennis.
He was defeated by Novak Djokovic in the second round of the 2012 Australian Open.