Melbourne, Australia (SportsNetwork.com) - World No. 1 Serena Williams and former top-ranked star Venus Williams secured berths in the quarterfinals at the 2015 Australian Open. Serena dropped the first set before rallying to top rising 24th-seeded Spaniard Garbine Muguruza 2-6, 6-3, 6-2 in two hours at Melbourne Park. Muguruza stunned Serena at the French Open last year, handing the American, who won just four games in that match in Paris, the worst loss of her Grand Slam career in the process. The 33-year-old American great blitzed her 21-year-old opponent with 17 aces and won 38 of 49 first-serve points on Monday. It was a great match -- congratulations to Garbine, she played so well, Serena said. The 18-time Grand Slam champion and reigning U.S. Open titlist owns five Aussie Open titles, but none since 2010. Her quarterfinal opponent will be 11th-seeded Slovak Dominika Cibulkova, who doused on-the-mend Belarusian star Victoria Azarenka, 6-2, 3-6, 6-3. Azarenka led 2-0 in the third set, but couldnt hold on against the diminutive Cibulkova. Today I wasnt thinking about the score, I was just going for it, Cibulkova said. And when I was up, I was going for it even more. I always have tough matches with Vika. The tennis she plays goes well with mine, Cibulkova added. Cibulkova was last years Aussie runner-up to since-retired Chinese star Li Na. The former world No. 1 Azarenka is a two-time Aussie Open champ and two-time U.S. Open runner-up. Her 2014 season was interrupted by a foot injury and shes been trying to re-locate her game since last spring. In other fourth round action on Day 8 of the fortnight, an 18th-seeded Venus remained undefeated in 2015 by surprising sixth-seeded former Wimbledon runner-up Agnieszka Radwanska 6-3, 2-6, 6-1 and rising Madison Keys vanquished fellow American Madison Brengle 6-2, 6-4. Brengle reached her first-ever WTA final in Hobart two weeks ago. Venus will clash with the 19-year-old Keys in an all-American quarterfinal on Wednesday. Venus is a seven-time Grand Slam champion who was the 2003 Aussie runner-up to her younger sister. Shes a perfect 9-0 this year, including a title in Auckland three weeks back. The 34-year-old Venus was asked what her inspiration has been to keep plugging away all these years. Definitely my sister Serena, she replied. Shes just the ultimate champion. She definitely gives me a lot of inspiration. And of course all of my fans, whove always stayed behind me. Keys will play in her first-ever Grand Slam quarterfinal when she faces Venus. It feels really good, she said. My mom texted me before the tournament. She said, Its your last Grand Slam as a teenager, and sent me a bunch of grandma faces. Im like, Thanks for reminding me mom! Thank you. Love you. But its huge. Its my last Slam as a teenager. I hope I can keep it up. The quarterfinals will get underway Tuesday, as second-seeded former No. 1 Maria Sharapova will battle seventh-seeded Wimbledon runner-up Eugenie Bouchard and third-seeded French Open finalist Simona Halep will take on consistent 10th-seeded Russian left-hander Ekaterina Makarova. Sharapova is 3-0 all-time against the Canadian Bouchard, including some French Open match wins in 2013 and last year, while Halep is 1-0 lifetime versus Makarova. The reigning French Open champion Sharapova was the Aussie champ in 2008 and runner-up in 2007 and 2012. Shohei Ohtani Jersey . Jannero Pargo scored 14 of his 24 points in the fourth quarter to help the Charlotte Bobcats erase a 21-point deficit and rally for an 83-76 preseason victory over the Milwaukee Bucks on Saturday night. Huston Street Jersey . has left the San Jose Sharks to become the Boston Bruins director of player personnel. http://www.angelsteamshop.com/Customized/.com) - Intrastate rivals collide Saturday as the Texas State Bobcats hit the road to take on the eighth-ranked Texas Longhorns in a non-conference battle at Frank Erwin Center. Luis Valbuena Jersey . Correia pitched six innings of one-run ball, Eduardo Escobar homered, and the Minnesota Twins pulled away late to beat the Colorado Rockies 9-3 on Saturday. Blake Wood Jersey . Founding members of the Genie Army, a group of Eugenie Bouchard supporters who cheered for the rising tennis star during the Australian Open in January, will be in the city for the Rogers Cup, beginning this weekend.Canada has already had two close calls for medals on the luge track in Sochi. Those fourth-place finishers will join forces on Thursday, trying once again to climb onto the podium in the new Olympic sport of luge team relay. Womens slider Alex Gough, mens slider Sam Edney, and the doubles pair of Justin Snith and Tristan Walker will compete for Canada in the events Olympic debut at the Sanki Sliding Center. Both Gough and the doubles team came in fourth in their respective events andd spoke after their races about ignoring the disappointment of missing out on a medal by mere fractions of a second, concentrating on this race instead.dddddddddddd The Canadians, all hailing from Calgary except for Walker, who is from nearby Cochrane, Alta., had plenty of success on the World Cup circuit in team relay this past season, picking up four silver medals in six attempts. The event will get underway at 11:15 a.m. ET, with the Canadians set to start second-last. ' ' '