Raonic vows to keep attacking
Milos Raonic is determined to keep improving this year after admitting he could have played better in his victory against Diego Schwartzman.
The Canadian beat the Argentine player 6-3 6-2 in the Brisbane International but knows that he should have come to the net more.
The top seed said: "I probably should have approached 12 more times and I probably should have won a few more.
"I definitely want to, especially at the beginning, since obviously I didn't take care of my serve so well. I hesitated, but also, with him, you've got to understand that he's quite quick. So rarely do you get him sort of reaching for balls."
Raonic will play either fifth seed Rafael Nadal or Mischa Zverev in the quarter-finals.
Elsewhere, Dominic Thiem faces Grigor Dimitrov in the last eight after they both eased through their latest matches.
Thiem saw off the Australian wildcard Sam Groth 7-6 6-3 and Dimitrov defeated the seventh seeded Frenchman Nicolas Mahut 6-2 6-4.
Meanwhile, Sir Andy Murray extended his winning run to 26 matches by beating the Austrian Gerald Melzer 7-6 7-5 at the Qatar Open.
The Scot, currently the world number one, said afterwards: "He played great tennis and dominated large parts of the match. If he plays like this again this year he'll move higher and higher up the rankings.
"I played pretty good. The depth in men's tennis is great right now."
Novak Djokovic defeated Horacio Zeballos 6-3 6-4 to also move into the quarter-finals in Qatar.
Djokovic is 13/8 to win the Australian Open while Murray can be backed at 13/8, Nadal at 14/1 and Thiem at 80/1.
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