BEIJING -- Top-seeded Novak Djokovic of Serbia opened defense of his China Open title on Tuesday with a 6-1, 6-3 win over Gong Mao-Xin of China to ease into the second round.
Djokovic, ranked No. 2 in the world after a runner-up finish at the U.S. Open, won 87 percent on his first serve points and took just 1 hour, 11 minutes to beat Gong.
Britain's Andy Murray, the No. 2 seed, also had an easy win, beating Paul-Henri Mathieu of France 6-2, 6-3.
Murray served up 10 aces to beat Mathieu, once ranked as high as 12th in the world but who had to qualify for the main draw after a series of injuries.
Sweden's Robin Soderling, a French Open finalist, dropped the first set before rallying past Tommy Robredo 4-6, 6-1, 6-4.
Nikolay Davydenko of Russia defeated Florian Mayer 6-3, 6-4.
In other first round matches Tuesday, Alexandr Dolgopolov of Ukraine beat Marcos Baghdatis of Cyprus 6-4, 6-4, and Spain's Nicolas Almagro defeated Lukasz Kubot of Poland 7-5, 6-2.
In the second round of women's singles, Maria Sharapova made 18 unforced errors in losing to Elena Vesnina 7-6 (3), 6-2. Sharapova lost in the opening round in Tokyo last week.
Li Na defeated Alisa Kleybanova of Russia 6-1, 6-4, and 14th-ranked Shahar Peer beat Patty Schnyder 6-4, 6-2.
Petra Kvitova defeated Kaia Kanepi 7-5, 6-7, 6-2.