BEIJING — Novak Djokovic improved his perfect record at the China Open to 25-0 by beating Simone Bolelli of Italy 6-1, 6-1 Tuesday in the first round.
Djokovic's winning streak started in 2009, when he won the first of his five titles at the tournament. He didn't play in 2011.
Rafael Nadal also advanced to the second round, beating Chinese wild-card entry Wu Di 6-4, 6-4. Nadal dropped serve four times in the match, including three straight games in the second set.
On the women's side, U.S. Open champion Flavia Pennetta of Italy rallied to advance to the third round with a 3-6, 6-0, 6-4 win over Teliana Pereira of Brazil.