Brisbane International: Ruthless Nadal storms into the quarterfinals

Rafael Nadal continued his impressive return from a long injury layoff with a 6-1 6-2 demolition of wildcard Jason Kubler to reach the quarter-finals at the Brisbane International on Thursday ahead of this month's Australian Open.

Out for nearly a year with a hip problem that required surgery, the 22-time Grand Slam champion overpowered Kubler in 83 minutes to book his place in the last eight.

Nadal had an impressive start as he cruised to a 5-0 lead before Kubler could even settle inside the Pat Rafter Arena.

The Australian held his serve in the sixth game and threatened to break the Spaniard in the next but Nadal came back from 40-0 down to seal the opener.

With Kubler hampered by a right elbow issue, Nadal broke in the opening game of the second set and again in the seventh before serving out the match.

"I think I started the match very well," Nadal, whose stunning shots included a spectacular backhand smash, said in an on-court interview and will now face Australian Jordan Thompson.

"I saw videos of Jason before the match and I saw him playing very solidly from the baseline, so I came on court and tried to be aggressive with my shots from the baseline."

"Two victories after a long time being outside of the professional tour is something that makes me feel good," added the Spaniard, referring to Tuesday's win against Austria's former world number three Dominic Thiem.

OSTAPENKO ADVANCES

Former French Open champion Jelena Ostapenko beat Karolina Pliskova 6-2 4-6 6-3 to reach the quarters in the women's section of the tune-up event for the Melbourne Park Grand Slam, which runs from Jan. 14-28.

Third-seeded Latvian Ostapenko, who will meet former world number one Victoria Azarenka for a place in the last four, raced through the first set but looked frustrated as Czech Pliskova fought back to claim the second.

Twice champion and number eight seed Azarenka beat France's Clara Burel 7-5 6-2, the 34-year-old Belarusian powering into a 4-1 lead in the opener before Burel drew level.