Roger Federer pleased to overcome "tough" match

Roger Federer
© PA Photos
Roger Federer says that he has had a "good day at the office" after defeating Ivo Karlovic to reach the fourth round of the Australian Open.

Roger Federer has expressed his delight in reaching the fourth round of the Australian Open.

The former world number one didn't drop a set against Ivo Karlovic but the Swiss pro slightly edged the match to clinch the win in Melbourne.

"Obviously there was not much baseline tennis out there," said Federer. "That's why it's hard to judge where my game is at, but I was in control. It was a good day at the office.

"I thought it was going to be at least one tie-break if not two, so one is good," said Federer. He's a tough man to play against. I am happy I found a way today and I am happy to be through."

Federer will face Bernard Tomic in the fourth round after the Australian defeated Alexandr Dolgopolov in five sets.

Bernard Tomic
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ATP RankingsPoints
1Spain Rafael Nadal7,645
2Scotland flag Andy Murray7,150
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,690
5Serbia Novak Djokovic5,325
6Alexander Zverev4,470
7Croatia Marin Cilic4,155
8Austria Dominic Thiem4,030
9Bulgaria Grigor Dimitrov3,710
10Japan Kei Nishikori3,195
11Canada Milos Raonic2,870
12France Jo-Wilfried Tsonga2,690
13Belgium David Goffin2,525
14United States John Isner2,425
15Spain Roberto Bautista Agut2,425
16Pablo Carreno Busta2,385
17United States Jack Sock2,345
18Australia Nick Kyrgios2,325
19Czech Republic Tomas Berdych2,310
20Lucas Pouille2,210