Juniors
8 in the International Tennis Federation Junior combined world rankings in April 2009. Junior Slam results – Singles:
Australian Open: QF (2009)
French Open: 1R (2009)
Wimbledon: 2R (2009)
United States Open: 1R (2008, 2009)
Junior Slam results – Doubles:
Australian Open: West (2008)
French Open: QF (2008)
Wimbledon: West (2008)
United States Open: West (2009)
Pro tour
118 in June 2012.
In 2008 Hsieh won the 2008 Wimbledon Championships - Boys" Doubles alongside Yang Tsung-hua. In 2009 he won the Australian Open Boys" Doubles alongside Francis Casey Alcantara and the United States Open Boys" Doubles together with Hungarian Márton Fucsovics. Hsieh compiled a doubles win/loss record of 124-33 (69-44 in singles) and reached a career-high of Number. Hsieh has won 1 Challenger title and 9 Futures titles in doubles, reaching a career-high doubles ranking of World Number.
