Published 02/10/2018 at 13:17 GMT | Updated 02/10/2018 at 15:00 GMT
Del Potro, playing his first match since losing to Novak Djokovic in the U.S. Open final last month, looked in fine form as he fired 10 aces and won 86 percent of points on his first serve to seal victory in 90 minutes.
The 30-year-old Argentine can qualify for next month's ATP Finals in London for the first time since 2013 if he reaches the final in Beijing. He plays Russia's Karen Khachanov next.
Albert Ramos-Vinolas of Spain hits a return during his men's singles first round match against Juan Martin del Potro of Argentina at the China Open tennis tournament in Beijing on October 2, 2018.