MASON, Ohio -- Angelique Kerber has Serena Williams within arms reach, and shes trying not to think about it.Kerber advanced to the Western & Southern Open semifinals Friday, staying on track to overtake Williams at No. 1. She overcame a sloppy first set and beat Carla Suarez Navarro 4-6, 6-3, 6-0.If Kerber wins the tournament, shell move ahead of Williams in next weeks WTA rankings. Williams has been No. 1 for 183 consecutive weeks, the second-longest such streak. She is the two-time defending champion but withdrew because of a sore shoulder.And now, she could wind up getting passed by Kerber, who doesnt want to put any more pressure on herself.Of course, everybody is asking me this question, Kerber said. And yeah, lets see what happens in the next weeks or next days. When the time is ready, maybe I can reach the No. 1 (ranking). Still, its a long way. Its closer than a few days ago when I sat here.In the mens bracket, Andy Murray struggled with a stiff back and gritted out a 6-4, 6-4 victory over Bernard Tomic to reach the semifinals and extend his successful summer, which includes his second Wimbledon title and another Olympic gold medal. He has won his last 21 matches, a career high.I think its just fatigue, really, Murray said. I have played a lot of the matches in a short space of time, and also theres been a change of surface as well. It does put a little bit more stress on the joints, the hard courts. Yeah, just accepting it for what it is. Ill be fine. I just need to work through it and accept it.Murray is the only player in the tournament who has won a Cincinnati championship, taking it in 2008 and 2011.Kerber has reached the finals in Cincinnati once before, losing to Li Na in 2012. She was in trouble after a sluggish opening set on Friday -- 17 unforced errors -- but took control early in the second set. She had only seven unforced errors in the final set.Kerber will play third-seeded Simona Halep, who beat Agnieszka Radwanska for her 13th straight match victory. Kerber beat Halep in the quarterfinals at Wimbledon. Halep has reached the finals in Cincinnati once, losing to Williams in 2015.Karolina Pliskova also advanced with a 6-3, 4-6, 6-2 win over Svetlana Kuznetsova. Shell face Garbine Muguruza, who beat qualifier Timea Babos in straight sets.The mens bracket was wide open with the top players missing. Top-ranked Novak Djokovic and defending champion Roger Federer skipped the tournament because of injuries. Rafael Nadal is still getting back into playing shape after a wrist injury cost him two months and was knocked out of the tournament Thursday.Murray is the only member of the Big Four still left, but hes running on fumes. He won the gold medal at the Olympics in Rio de Janeiro on Sunday, flew to Cincinnati and reached the quarterfinals despite a worn-down body and a nagging head cold.On Friday, he reached for his stiff lower back after chasing a ball in the first game of the match and favored it throughout the set. He moved much better around the court in the second set, broke Tomic to go up 5-4, and served it out.Tomic fell to 0-17 against players ranked in the top four. Hes 0-5 career against Murray, failing to win a set.Murray will face Milos Raonic in the semifinals. One of the Big Four has won 54 of the last 58 Masters events.The wide-open tournament provides a chance for someone like the unseeded Grigor Dimitrov to win a Masters title. Dimitrov reached the semifinals of a Masters event for the third time, beating top American Steve Johnson 7-6 (8), 6-2.I mean, Im hoping Im going to be playing here on Sunday, Dimitrov said.Despite the loss, Johnson will become the top American in the ATP rankings next week. John Isner has held the top spot since July 29, 2013. Dimitrov will play Marin Cilic, who reached his first Masters semifinal when 19-year-old Borna Coric retired after losing the first set. Coric played the set with both knees taped. Cheap Vapormax . MLS Commissioner Don Garber and Miami-Dade County Mayor Carlos Gimenez also will attend the session, which was announced Monday. The league has discussed placing its next two expansion teams in Miami and Atlanta. Wholesale Nike Shox Womens . Fernandez, coached in Toronto by former two-time Olympic silver medallist Brian Orser, scored 267.11 points and is the first champion to successfully defend since Russias Evgeny Plushenko in 2005 and 2006. http://www.clearancenikeshoxcheap.com/mens-vapormax-cheap.html . Tomas Berdych and Radek Stepanek defeated Nenad Zimonjic and Ilija Bozoljac 6-2, 6-4, 7-6 (4) on the indoor hard-court at Belgrade Arena. The victory improved the Czech pairs impressive cup doubles record to 14-1. Nike Shox Outlet Cheap . Thats not a comment on the suspension that banished the Portland Winterhawks general manager and coach from his Western Hockey League teams bench for most of the 2012-13 season. Discount Mens Nike Shox .Y. - New Orleans forward Anthony Davis was chosen Friday to replace the injured Kobe Bryant in the NBA All-Star game that will be played in his home city.Kyle Walker breathed a sigh of relief after hearing Mauricio Pochettino had agreed a new Tottenham contract and insists the clubs title challenge is not over yet. Pochettino has struck a verbal agreement over a two-year extension, which will keep him at White Hart Lane until 2021 - the deal is now with the Argentinians lawyers and expected to be confirmed in the coming days.Manchester United, Chelsea and Paris Saint-Germain had all reportedly considered Pochettino for their top jobs next season after the 44-year-old led Spurs to second in the Premier League and all-but secured Champions League qualification. Walker was being interviewed at Tottenhams training ground on Friday as Pochettino announced his new deal and when the full-back was told, his reaction was telling.Ive been waiting for someone to say that for ages now! Hes said it? Thank goodness for that. Im over the moon, Walker said.It is a relief. There is always going to be speculation. It happens all the time. Kyle Walker (L) has hailed Mauricio Pochettinos influence on Spurs after news broke he had verbally agreed to stay This player is going here, this manager is going there but I think thats not for me to talk about or for any other player to talk about. We just need to conduct ourselves professionally.Pochettino is an immensely popular figure in the Tottenham dressing room and it is understood there was a growing nervousness among the players about their head coachs future.The squads young crop are particularly loyal with the likes of Harry Kane, Dele Alli, Eric Dier, Erik Lamela and Danny Rose, as well as Walker, all enjoying remarkable progress under his tutelage. Mauricio Pochettino explains why hes extending his contract at Tottenham. The new deal could keep there until 2021 For me, hes not just the manager on the pitch but its how he is off the pitch. That says everything for me, Walker said.Some of the managers that have come in, you know...theres young players here now and sometimes they do need an arm around them and to say, you can do this, sit them down, look at the TV screen, you can do this better, because we are still learning.We are probably not in our prime yet, most of us, so we are still learning and he is the man to take this club forward and onto new levels. Its just everytthing about him, his aura as well.dddddddddddd Its just fantastic. Guus Hiddink insists Chelseas players will take all their remaining games seriously Tottenham visit London rivals Chelsea on Monday, live on Sky Sports, knowing their title challenge could be over by the time they kick-off if Leicester beat Manchester United on Sunday, also live on Sky Sports.Even if the Foxes are not crowned champions this weekend, they only need three points from United, Everton and Chelsea to finish the job - but Walker has not given up hope.Its a difficult one because its not over until the fat lady sings, Walker said. Man United are still chasing something, Everton are not going to want to lose. Willian says the Chelsea players dont want Tottenham to win the league and will be doing their upmost to beat them There is no professional footballer who steps onto a pitch and says OK, were just going to chuck this one in. Everton, probably, have a point to prove, having not had the best of seasons.Chelsea likewise, the last game of the season at Stamford Bridge, theyll want to put out a performance for their crowd, so hopefully, theyre not easy games [for Leicester]. But first and foremost, we need to go to Stamford Bridge and win, and weve got two tough games after that. So nothing is a given. Also See: Poch wants one last twist New deal for Spurs boss Why Pochettino is key Redknapps MNF preview ' ' '