INDIAN WELLS - Victoria Azarenka barely broke a sweat as the former world number one routed Slovakia's Magdalena Rybarikova 6-0, 6-0 to reach the Indian Wells semi-finals on Thursday.

Two-time Grand Slam winner Azarenka is also a former champion in the joint WTA and ATP Tour tournament, taking the title in 2012 when she beat Maria Sharapova. "I started well. I was really aggressive," said Azarenka, who reached the Australian Open quarter-finals this year. "The start was the key for me."

There have been nine women's draw double bagels in Indian Wells' history but Sharapova was involved in the most noteworthy when she was slammed 6-0, 6-0 by Lindsay Davenport in the semi-finals of the 2005 tournament. Sharapova did not take part this year because of a failed drug test and is awaiting a possible suspension from the WTA Tour.

It is the first double bagel in Indian Wells since 2014 when Poland's Agnieszka Radwanska hammered Annika Beck in the round of 32. Only two of the top 12 seeds on the women's side of the draw have reached the semi-finals -- number one Serena Williams and number three Radwanska. They will square off in the other semi-final on Friday.

Azarenka advances to face 18th-seeded Karolina Pliskova. Daria Kasatkina's surprising run at Indian Wells came to an abrupt halt when she was humbled 6-3, 6-2 by Czech Pliskova earlier Thursday.

Raonic, Goffin to tangle in semi-final: Canadian No 1 Milos Raonic advanced to his second consecutive Indian Wells semi-final Thursday with a 7-5, 6-3 win over Frenchman Gael Monfils.

The meeting under the lights on the main stadium court was a contrast in styles with the hard-serving Raonic overpowering the grease-lightning speed and athleticism of Monfils. "I am happy with the way I competed, and at the end of the day what counts the most is I took care of my serve," Raonic said.

Raonic moves on to the semis where he will face world number 18 David Goffin, who surprised 10th seeded Croatian Marin Cilic on Thursday 7-6 (7/4), 6-2. The final two quarter-finals are on Friday with Rafael Nadal squaring off against Kei Nishikori, and world number one Novak Djokovic battling Jo-Wilfried Tsonga.

Raonic, who just returned from a six-week layoff due to a torn thigh muscle, was unable to play in the Davis Cup earlier this month when Canada lost 5-0 to France. Raonic also beat Monfils in the quarter-finals in January at the Australian Open before losing in the semis to Andy Murray, while feeling the effects of the thigh injury.

But there was no gloating from Raonic Thursday when asked if this was revenge for France's rout over Canada at the Davis Cup. "I'm not the guy that holds a grudge. I have one guy across the net that wants something that I want more," Raonic said. "I really wish I could have been there in Guadeloupe, and competed in that scenario."