Juniors Yang was named
International Tennis Federation (ITF) Junior World Champion for the 2008 season by the ITF. As a junior, he compiled a 66–23 win–loss record in singles (and 61–16 in doubles), achieving his combined ranking of No. 1 in the world in July 2008. He reached 4 Junior Grand Slam finals in 2008, winning 3 titles. He started by losing the
2008 Australian Open – Boys' singles final, then rebounded to win the
2008 Australian Open – Boys' doubles, the
2008 French Open – Boys' singles and the
2008 Wimbledon Boys' Doubles titles.
Pro tour Yang competes today on the
ATP Challenger Tour and the
ATP World Tour, both in singles and doubles. He reached his highest ATP singles ranking, No. 164, on 14 May 2012, and his highest ATP doubles ranking, No. 127, on 15 July 2019. Yang is coached by Lhen Man. In the
2012 US Open, Yang reached the third qualifying round, where he lost to
Teymuraz Gabashvili. Later he qualified into the
ATP Bangkok, where he lost in the first round to
Grigor Dimitrov. In 2013, he defeated
Tatsuma Ito to reach semifinals of the
An-Ning Challenger, where he lost to
James Ward. At
Kun-Ming he also reached semifinals after winning over
Yuichi Sugita and
Wu Di. Yang defeated
Marius Copil to reach third round of qualifying of the
2014 Australian Open, after which he lost to
Dušan Lajović. At the Maui Challenger, he reached the final which he lost to Bradley Klahn. At the
Liberec Challenger, he beat world No. 40
Pablo Cuevas and
Norbert Gombos to reach the semifinals, where he was defeated by
Horacio Zeballos. ==Challenger and Futures finals==