In singles, all of Chen's appearances in a final of a tournament have come at the ITF Tour level, where he has a record of 23 wins and 23 losses.

He has since made 2 other singles main draw appearances; the 2006 Tokyo tournament defeating Takahiro Ittogi and Lars Burgsmüller in qualifying before losing to Japan's Satoshi Iwabuchi in the first round 2–6, 1–6, and the 2007 Mumbai tournament where he defeated Tushar Liberhan and Leoš Friedl in qualifying before losing to Australia's Lleyton Hewitt in the first round 3–6, 3–6.

In June 2012, Chen reached the finals of Toyota Bangalore Open ITF tournament, losing to Vishnu Vardhan, 6–2, 4–6, 6–1.

Other than Davis Cup matches, Chen has played made 2 main doubles draw appearances At the ATP Tour level, at the 2008 Cincinnati Masters partnering with Phillip King where they lost to John Isner and Mardy Fish 4–6, 6–7(2–7), and secondly at the 2015 Shenzhen Open partnering Austin Krajicek where they lost to Chris Guccione and André Sá 1–6, 5–7.

Chen has competed in the qualifying rounds of a Grand Slam tournament on 18 occasions, none of which saw him advance through to the main draw.