Melbourne, Australia (SportsNetwork.com) - Four-time champion Novak Djokovic handled Milos Raonic, while Stan Wawrinka kept his hopes of a repeat Australian Open title alive by besting fifth-seeded Kei Nishikori in straight sets on Wednesday. The world No. 1 Djokovic dismissed the eighth-seeded Canadian star Raonic 7-6 (7-5), 6-4, 6-2, while the fourth-seeded Wawrinka fired 20 aces and was broken just once in a 6-3, 6-4, 7-6 (8-6) quarterfinal victory over the U.S. Open runner-up Nishikori at Rod Laver Arena. The 27-year-old Djokovic is bidding to become the second man in history to win the Australian Open for the fifth time, joining Aussie great Roy Emerson. The Belgrade native won his first major title in Melbourne in 2008 and followed with three successive victories in 2011-13. He has a 48-6 match record at Melbourne Park. Djokovic still has yet to drop a set in his ruthless run at this 2015 fortnight. He is through to his 25th Grand Slam semifinal, one behind Andre Agassi for the fourth most in the Open Era. Djokovic improved to 5-0 against Raonic, as he doused the Canadian in two hours. The Serb was not at his best in the first set, not quite finding his timing under the lights at Laver. But a costly forehand unforced error from Raonic at 5-6 in the tiebreak -- having just saved two set points -- gifted the Serb the opener. From there, Djokovic was clinical. He lost just two points on serve in each of the second and third sets, while breaking Raonic three times in total. It was a close first set, but I thought I had more chances in the first set than him, said Djokovic. Managed to stay tough in the right moments and win the crucial first set. Obviously winning it in a tiebreak and making the break of serve first game of the second set was definitely huge really for me. I could start swinging through a little bit more, be more aggressive into the court. After that first game of the second set I played a great match. The 24-year-old Raonic was looking to become the first Canadian in history to reach the Aussie Open semis. The Toronto resident reached his first Grand Slam semi last year at Wimbledon, losing to Roger Federer. I just think [the first set] gave him a bit more belief, said Raonic. I wish I would have served better in certain moments, but I didnt lose because of my serve. He just didnt allow me to organize my game. Even when he was returning well, by the end of the match he was doing a good job of playing deep and never allowing me to go forward. Obviously if you watch the footage, he was pretty much on the baseline the whole time and I was further back. The reigning Wimbledon champion Djokovic is seeking an eighth Grand Slam title. A five-set thriller was played between Wawrinka and Nishikori at last years U.S. Open, and it was Nishikori who survived a 4-hour, 15-minute marathon. The evenly-matched opponents were on the court for less than half that on Wednesday. The defending champ Wawrinka dominated the first set and did not face a break point until he was serving out the second ahead 5-4. Nishikori had three chances at pulling even, but Wawrinkas overpowering serve closed it out. Nishikori finally earned a break early in the third, but Wawrinka countered with one of his own at love. Three aces early in the tiebreak helped Wawrinka jump out to a healthy 6-1 lead. After staving off five match points, Nishikori hit a drop shot that fell into the net, and Wawrinka finished him off with another big ace. On Friday, fans will be hoping for another epic when Djokovic faces Wawrinka for the third year in a row at Melbourne Park. Two years ago, Djokovic denied Wawrinka 12-10 in the fifth set of a fourth-round clash, but last year the Swiss got his revenge with a 9-7 fifth-set victory in the quarterfinals. I take a lot of confidence [into the match], said Djokovic. I try to carry that in every next match, next challenge. Obviously Im going to play Stan, who is the defending champion here. We played five-set matches at the 2013 and 14 Australian Opens. Im going to be ready for a fight. But knowing that I have raised the level of performance tonight, and probably playing the best match of the tournament so far is affecting my confidence in a positive way. Hopefully I can carry that into next one. Djokovic is 16-3 lifetime against Wawrinka, including a 3-1 record at the majors. The first mens semifinal will be staged on Thursday when sixth-seeded Andy Murray takes on seventh-seeded Tomas Berdych. The big Czech is 6-4 lifetime against Murray, including 1-1 at the Slams. Murray is a two-time Grand Slam champion and three-time Aussie Open runner-up, while Berdych is a former Wimbledon finalist. Authentic Kelvin Beachum Jersey . Hes still nowhere close to throwing yet. 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Authentic Juston Burris Jersey . -- At the beginning of training camp, Andrew Bogut set a goal to play all 82 regular-season games and regain his place among the NBAs best centres.CALGARY -- Bob Nicholsons advice to his successor at Hockey Canada is be as comfortable having a beer with a minor hockey coach in Kindersley, Sask., as you are in the New York office of NHL commissioner Gary Bettman. From the 3,500 minor hockey associations across the country to the highest halls of hockey power, Nicholsons ability to establish, build and maintain connections turned Hockey Canada into a powerful sports organization. After 16 years as president and chief executive officer, Nicholsons last day on the job was spent presiding over the organizations annual general meeting in Calgary. "There are so many partnerships you have to work on," Nicholson said Saturday. "Thats how you grow the business side of the game and how you grow the game itself." His successor will be chosen by Hockey Canadas board of directors. Its a job of many moving parts that includes player, coach and official development programs, national teams, corporate sales and marketing, licensing, insurance, regulations and building consensus among 13 provincial branches. Nicholsons parting instructions also included tapping into Canadas multicultural population. "We need to figure out how to deal with new Canadians," he explained. "We need to be more flexible. We cant just register kids from September to April. We should have two or three hockey seasons. "The families are changing. We cant continue to do things we did in the 70s, 80s and 90s. There has to be change." There was a lot of that during Nicholsons tenure. The 60-year-old from Penticton, B.C., started with B.C. Hockey before joining Hockey Canada as vice-president in 1990. Hockey Canada and the Canadian Amateur Hockey Association merged in 1994 and Nicholson became president in 1998. "The reason there was a merger was both organizations were bankrupt," Nicholson recalled. The non-profit organization is now an operation of approximately $45 million annually due in large part to marketing and packaging of Canadas passion, as well as turning the organization into a brand. "The easiest way to describe that was when I started as president we had 20 staff and we have 127 staff today. Our budgets were $5 million total," Nicholson said. "We just really took the mark and built partnerships." A prime example is the world mens under-20 hockey championship that is a major contributor to the coffers. Hockey Canada parlayed the annual tournaments growing popularity into lucrative sponsorships and a large television contract with TSN. The money goes not only to Hockey Canada, but to the Canadian Hockey League that supplies a large number of players to the tournament as well as minor hockey associations who develop them. Nicholson struck a deal with the Internationaal Ice Hockey Federation to bring the tournament to Canada every two years starting in 2015.dddddddddddd Its also been held in Canada three of the last five years. "The world juniors and the womens worlds, those are a real staple in this country and theyre a big part of the tradition and also the financial side of it," Nicholson said. Canada has won both mens and womens Olympic hockey gold in back-to-back Winter Games. The 2002 mens hockey team, assembled by Wayne Gretzky, won gold to end a 50-year drought at the Winter Olympics. Canadian teams have won 44 gold at world championships, Olympics and World Cups on Nicholsons watch. "Look at the people hes brought into our organization, whether its high-end professional staff or people like Wayne Gretzky and Steve Yzerman," Hockey Canada chairman Jim Hornell said. "His capacity to bring people into our organization is huge and that will live on." Registration rose from 519,000 in 1998 when Nicholson took over to 634,892 this past season. Much of that growth has come in the female game with an increase from 29,000 to almost 90,000 today. Nicholson has also been front and centre on thorny issues. In the wake of revelations that junior hockey coach Graham James sexually abused players, a Speak Out program was established in 1997 to help prevent abuse and bullying in sport. When to introduce bodychecking in minor hockey has been a source of continual and fractious debate. Concussions in hockey are problematic for the long-term health of players. Nicholson emphasized safety in his final address at the AGM. "Everything you do, do it for the player," he said. "Its not about the turf youre representing or the area of the country you live in. Do whats best for the player. Player safety, those terms are all changing. We have to change with the time. "I really believe when I look back 10 years from now, this organization is going to go to a whole other level. As long as you continue to focus on the players, making sure players play this game safe, Canada will always be the country that carries this game worldwide." Establishing an initiation program to introduce children age five and six to hockey is part of Nicholsons legacy. He also oversaw the move of Hockey Canadas headquarters from Father David Bauer Arena at the University of Calgary to the WinSport at Canada Olympic Park. His first day off the job Sunday was to be spent golfing in Penticton. Nicholson will continue as a IIHF vice-president. Speculation is the NHL will come calling. "I dont know," Nicholson said. "In fairness Ive got a lot of options on my table. I told everyone I wasnt going to speak until June 1. Im going to have to deal with some things and see where it goes." ' ' '