Melbourne, Australia (SportsNetwork.com) - Four-time champion Novak Djokovic, reigning titlist Stan Wawrinka and Japanese star Kei Nishikori highlighted Mondays fourth-round winners at the Australian Open. The world No. 1 Djokovic got past Luxembourg left-hander Gilles Muller 6-4, 7-5, 7-5 in Mondays nightcap at Laver Arena to reach his 23rd consecutive Grand Slam quarterfinal. The seven-time Grand Slam champion and reigning Wimbledon titlist is seeking his fourth Aussie championship in five years, having captured three straight of his four Melbourne crowns from 2011-13. Up next for the great Djokovic, who has yet to drop a set through four matches here, will be eighth-seeded big-serving Canadian Milos Raonic, who is 0-4 lifetime against the Serb. Meanwhile, the fourth-seeded Swiss slugger Wawrinka pulled out a 7-6 (7-2), 6-4, 4-6, 7-6 (10-8) victory over Spaniard Guillermo Garcia-Lopez. Garcia-Lopez won the first five points of the fourth-set tiebreak and had five chances to force a fifth set at Melbourne Park, but Wawrinka saved all five before moving on. Garcia-Lopez stunned Wawrinka in the first round at last years French Open. Wawrinkas quarterfinal opponent on Wednesday will be the fifth-seeded U.S. Open runner-up Nishikori, who handled ninth-seeded former French Open finalist David Ferrer of Spain 6-3, 6-3, 6-3 on Day 8 of the fortnight. Looking ahead to his clash with Wawrinka, Nishikori said, Its going to be a really tough match because I have seen him play on TV a couple of matches. Even today he was playing really good. He can hit balls forehand, backhand -- great backhand actually. He can hit from anywhere at the back. Its going to be a tough match. But obviously Im in the quarterfinals, so no easy matches coming up. Hopefully I can play another good match. For sure it gives me confidence that I beat him in the U.S. Open. Its not like I cant beat him. Its going to be a fun match for sure. Nishikori made history as he became the first Asian man to contest a Grand Slam final last year when he defeated three Top-10 players, including Wawrinka in five sets in the quarters, to reach the U.S. Open final. The aforementioned Raonic had to outlast 12th-seeded Spanish lefty Feliciano Lopez, 6-4, 4-6, 6-3, 6-7 (7-9), 6-3, to reach the round of eight. Lopez saved seven match points before succumbing to the big Canadian. Raonic became the first Canadian man in the Open Era to reach the Aussie Open quarters and is also the second Canadian man in history to reach three major quarterfinals, following in the footsteps of Robert Powell at Wimbledon in 1908, 10 and 12. Its great to be doing what Im doing and that it is making a difference, said Raonic. It is, I guess, part of some history, if you look really deep. But at the end of the day, at the same time, Im always pushing myself for what I want to achieve. Im always sort of looking in the mirror and saying, Thats who I have to compare myself to: to myself. The quarterfinals will commence Tuesday, as third-seeded former world No. 1 Rafael Nadal will take on seventh-seeded Tomas Berdych and sixth-seeded Andy Murray will battle heavy Aussie crowd favorite Nick Kyrgios. Nadal beat Berdych in the 2010 Wimbledon final and is 18-3 lifetime against the big Czech. The reigning French Open king Nadal is a 14-time Grand Slam champ, including an Aussie title in 2009. Hes also a two-time runner-up in Melbourne, including last year when he was stunned by Wawrinka in the final. Murray is a two-time major titlist whos lost in three Aussie Open finals. Authentic Ted Karras Jersey . By then it was clear: The 76ers were going to win for the first time in two months, and they were going to do it with ease. The 76ers snapped their NBA record-tying, 26-game losing streak, routing the Detroit Pistons 123-98 on Saturday night to avoid establishing the longest skid in U. Authentic Danny Shelton Jersey . Off-Season Game Plan examines a team facing some challenging times as GM Bryan Murray tries to put together a roster for next season. Perhaps the first challenge facing Murray is that its expected he will be moving out Jason Spezza, a premier point producer who is about to enter the final year of his contract. http://www.cheappatriotsjerseysauthentic...erts-jersey.com) - The Ottawa Senators will try to keep their slim playoff hopes alive when they face the Chicago Blackhawks who are trying to secure their place in the post-season. Cheap Patriots Jersey . -- Rory McIlroy birdied his last two holes Thursday for a 7-under 63 to take the lead after one round of the Honda Classic. Authentic Shaq Mason Jersey . It certainly isnt a coincidence that Dwight Howard has scored at least 20 points in each game of the winning streak.Will Greenwood previews the Champions Cup and Challenge Cup semi-finals in this weeks Rugby Club. After seeing off a spirited Exeter side 25-24 with a last-gasp Jimmy Gopperth conversion, Wasps march into the semi-finals of the Champions Cup where they meet Saracens.Live on Sky Sports 1 from 3pm, the match promises to deliver entertainment with Saracens set-piece experience going up against Dai Youngs expansive troops. In the other Champions Cup semi-final Leicester Tigers host Dan Carters Racing 92, though there are doubts the former All Black will be passed fit for the game.In the Challennge Cup Harlequins welcome Grenoble on Friday night while the Dragons travel to France to take on Montpellier.dddddddddddd Coached by Jake White, the Top 14 outfit will be a stern test for the Welshmen, who go into Saturdays encounter as underdogs.Tune in at 5.30pm on Sky Sports 1 to watch the action unfold.Click on the video above for Will Greenwoods predictions for this weekends semi-finals Also See: Fixtures and results Rugby Union on Sky PRO12 home PRO12 table ' ' '