RIO DE JANEIRO -- With the Rio de Janeiro Olympics set to open, worried IOC members grilled top organizing officials about traffic jams, water pollution, security, and the absence of signage that gives the games its own distinct look.International Olympic President Thomas Bach also turned up the pressure Wednesday by talking straight to organizing committee president Carlos Nuzman and CEO Sidney Levy, who tried to soothe almost 100 IOC members.Its delivery time, Bach said. Here we go now. It really starts. We are very confident we will celebrate great games here in Rio and the world will be surprised to see what will happen here.Bach also cautioned: All praise is premature now. ... Its too early to celebrate.Prince Albert of Monaco asked about Rios severe water pollution, which soils Olympic venues for sailing, rowing, canoeing, triathlon and open-water swimming. Rio treats about half of its raw sewage, dumping the rest into the waters surrounding the area of 12 million people.The media has said a lot about the preparations of these games, and they say a lot about the levels of pollution, Albert said. How worried should we be?Rio spokesman Mario Andrada repeated assurances that bacterial pollution levels fall within World Health Organization guidelines. However, organizers have been criticized for the astronomical viral levels in the waters, and for not testing for this kind of pollution.Then theres surface debris.We do have a few problems with the floating garbage, Andrada acknowledged, explaining plans to use a dozen garbage collection boats in the sailing venue. Rio is also using barricades to block the flow of garbage from streams, and helicopters to spot garbage flows.Swiss IOC member Denis Oswald asked about traffic jams in the run-up to the games, which open Friday.Those whove had the opportunity to get to some of the venues have had lots of difficulties, Oswald said.Rio official Leo Gryner said there were some constraints getting the Olympic lane system to work. The lanes are to help get athletes and officials around town quickly. He said city officials were making changes.They are making the flow quicker and making sure all the athletes get to training and competition on time, Gyrner said.Rio commercial officer Renato Ciuchini was asked why there was so little signage -- signs that give the games it distinct look and help direct fans to venues. It was suggested the number installed only reached 15 percent.We are very confident the supplier will now install everything, but I believe a few will be installed a bit late, Ciuchini said. IOC officials said Christophe Dubi, the Olympic Games executive director, was holding an emergency meeting with the supplier.IOC member Alex Gilady asked Levy about his three largest worries. Levy listed transportation, security -- despite a force of 85,000 police and soldiers -- and finances.He said transportation was going well between the two largest venue clusters -- the Olympic Park and the northern cluster of Deodoro. He said that comprised 75 percent of the trips. The problem area was in urban Rio around Copacabana Beach and the Rodrigo de Freitas lagoon where rowing takes place.Its a real challenge, Levy said.He also acknowledged the operating budget is under stress. That is a budget of 7.4 billion reals ($2.3 billion) for operating the games themselves, but not for building venues and roads.Rio organizers have been getting cash advances from the IOC but still maintain their budget is balanced. Several reports say the IOC recently turned down a $70 million loan to Rio.Away from the venues, Brazil is in its deepest recession since the 1930s. Separately, President Dilma Rousseff has been replaced by interim president Michel Temer as she awaits an impeachment trial in the federal senate.---Stephen Wade on Twitter: http://twitter.com/StephenWadeAP .His work can be found at http://bigstory.ap.org/content/stephen-wadeCustom College Jerseys . Scott Kazmir allowed four hits in seven shutout innings, Michael Brantley hit a two-run homer in a three-run first inning and the Indians maintained their hold on an AL wild-card spot with a 4-1 win over the Houston Astros on Saturday night. Fake College Basketball Jerseys . 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Getting set to go their separate ways for a short Christmas break, the Raptors coach credited his team for their effort on a seemingly impossible three-game road trip, urging them to build on that success when they get back to work at the end of the week.Which goalkeeper will come out on top when Manchester United host Arsenal live on Sky Sports on Saturday? We analyse the key battle between David de Gea and Petr Cech. The first Premier League game after the international break sees Jose Mourinho and Arsene Wenger go head to head at Old Trafford. With both sides boasting an array of attacking options, the performances of the men between the posts may prove to have a big say on who leaves the stadium with three points. Man Utd vs Arsenal November 19, 2016, 11:30am Live on Get Sky Sports Get a Sky Sports pass David de Gea has won Manchester Uniteds Player of the Year award in each of the last three seasons. The 26-year-old Spain international has kept four Premier League clean sheets this season, a tally only bettered by Chelseas Thibaut Courtois who has kept six. Since joining United in June 2011, only Joe Hart (77) has made more shut-outs than De Gea (65) in the Premier League. After a proposed transfer to Real Madrid fell through last summer, De Gea dusted himself down, signed a new contract, and continued the excellent form that has made him one of the worlds best goalkeepers. Premier League clean sheets since 2011 Rank Player Clean sheets 1st Joe Hart 77 2nd David De Gea 65 3rd Petr Cech 64 4th Simon Mignolet 56 5th Tim Howard 51 Since being reinstated to the team in September 2015, he has kept more Premier League clean sheets than any other goalkeeper. His total of 19 is one higher than Petr Cechs. He has also managed to usurp Iker Casillas as Spains No 1 and won an FA Cup winners medal, too.De Gea has a good record against Arsenal. He saved a Robin van Persie penalty with the score at 1-0 in his first appearance against the Gunners in August 2011. The save proved crucial as United went on to record an emphatic 8-2 victory. Premier League clean sheets since September 2015 Rank Player Clean sheets 1st David De Gea 19 2nd Petr Cech 18 3rd Kasper Schmeichel 17 4th Hugo Lloris 16 5th Heurelho Gomes 12 De Gea has won five of his nine Premier League appearances against the Gunners in total, keeping two clean sheets in the process. His only defeat came 13 months ago when he conceded three goals in the first 19 minutes at the Emirates Stadium. David De Gea has proven himself as one of the best goalkeepers in the world In the opposite goal is a player De Geas manager Jose Mourinho knows very well. Cech was one of Mourinhos first signings at Chelsea in 2004 and was a member of the squad that won seven trophies under his management. When Roman Abramovich allowed Cech to join Arsenal in 2015, Mourinho said publicly that he wanted to keep the 34-year-old. Petr Cech has impressed for Arsenal this season Cech has enjoyed regular success when facing United. He made his debut in English football in Chelseas 1-0 win at Stamford Bridge in August 2004. Saturday will be his 30th appearance against the Red Devils and his 20th in the Premier League. Premier League clean sheets against Man Utd Rank Player Clean sheets 1st= Petr Cech 6 1st= David Seaman 6 3rd= Brad Friedel 5 3rd= Joe Hart 5 5th= Tim Howard 4 5th= David James 4 5th= Tim Krul 4 His total of six Premier League clean sheets is a joint record against United and on Saturday he is looking to become the first away goalkeeper to keep three clean sheets at Old Trafford.dddddddddddd Six months half price Upgrade to Sky Sports to watch Man Utd v Arsenal on Saturday and get the first six months half price As well as keeping a Premier League record 182 clean sheets, Cech averages the fewest games per shut-out in Premier League history at 2.08. Best clean sheet records in Premier League history Rank Player Clean sheets Games per clean sheet 1st Petr Cech 182 2.08 2nd Pepe Reina 134 2.13 3rd Edwin van der Sar 132 2.36 4th Peter Schmeichel 128 2.42 5th David Seaman 140 2.46 6th Carlo Cudicini 64 2.52 7th Joe Hart 119 2.54 8th David de Gea 65 2.71 9th Nigel Martyn 137 2.72 10th Jens Lehmann 54 2.74 Cech has lost only one of his last eight appearances against United, but he has not always had success against Saturdays opponents. Most memorably, Cechs Chelsea side were beaten on penalties in the 2008 Champions League final in Moscow.Upgrade to Sky Sports now to watch Man Utd v Arsenal this Saturday and get the first six months half price! Also See: The importance of Carrick Can Arsenal keep going? ' ' '