Novak Djokovic extended his unbeaten run in Beijing to 30 matches after defeating Portugal’s Nuno Borges 6-3, 7-6(7-2) at the China Open. The 39-year-old Serbian battled through physical discomfort and a medical timeout to secure his first win since Wimbledon in July. Djokovic, a six-time Beijing champion, will face Chinese wildcard Bu Yunchaokete in the second round.