Day four at the Australian Open
MELBOURNE (Reuters) - World number one Rafa Nadal progressed to the third round of the Australian Open on Thursday but conceded he could have been more clinical in a straight sets victory over Argentina's Federico Delbonis.
The Spaniard, bidding for a record-equalling 20th Grand Slam title, converted just three of his 20 break point opportunities in a 6-3 7-6(4) 6-1 victory.
"I think I can do lot of things better. But it's not because of Delbonis. I can do things better because of myself. I need to play better," said Nadal.
There were difficult five-set wins for Dominic Thiem and Karen Khachanov and former champion Stan Wawrinka, before home favourite Nick Kyrgios entertained the crowd in a packed Melbourne Arena.
Kyrgios overcame Frenchman Gilles Simon 6-2 6-4 4-6 7-5 in a match where both players mimicked Nadal's service routine after they were handed time violations.
Karolina Pliskova, Belinda Bencic and Elina Svitolina recorded comfortable wins as all of the top 10 seeded players in the women's draw advanced to the third round in Melbourne for the first time since 2007.
(Compiled by Ian Ransom, Shrivathsa Sridhar and Hardik Vyas; Editing by Tom Hogue and Muralikumar Anantharaman)
