Wu participated in the 2012 Hopman Cup together with the country's best female player Li Na.

In the Asia-Pacific Australian Open Wildcard Play-off men's final, Wu defeated Thai Danai Udomchoke to obtain his wildcard to compete in the 2013 Australian Open main draw.

On his way to the final, Wu beat top seed Yuichi Sugita of Japan and No.

[4] In late 2013, he once again qualified for the 2014 Australian Open by winning the Asia-Pacific Australian Open Wildcard Plays-off men's final, on the route to the main draw, Wu defeated countryman Zhe Li, Yuki Bhambri of India and compatriot Ze Zhang.

Wu Di earned his biggest win in his career by upsetting Denis Istomin in four sets in the Asia Pacific Davis Cup singles rubber.