Wallabies hooker Tatafu Polota-Nau has been playing through as good as a broken arm, coach Michael Cheika says, and wont play another Test until its fully healed.Polota-Nau was the surprise high-profile casualty from Cheikas 30-man squad on Thursday for the Rugby Championship clashes against South Africa and Argentina.The 31-year-old fractured his right arm for the second time while playing for the NSW Waratahs in March.Despite playing through significant pain in the June Test window and the early part of the Rugby Championship, hes still not 100 per cent, and after discussing the situation with Polota-Nau, Cheika said the best course of action was for him to stop.Hes as good as playing with a broken arm. His arm hasnt mended properly, Cheika told reporters on Thursday.Hes got the plate in there and hes been really pushing hard and its a real credit to him because its been tough for him.But thats enough now.Polota-Naus a player that we want. What hes adding in games has been really vital for us and hes a player we want in top condition going forward.His decision to either have a rest or operate or whatever it might be, well make in the next couple of weeks and decide then what happens for him for the rest of the season.Polota-Naus understudy at the Waratahs, Tolu Latu, has joined the squad as his replacement and is one of two uncapped players, along with winger Sefa Naivalu, in line to become Australias 10th Test debutant this year.Cheika said he would do everything he could to ensure Polota-Nau returned to Super Rugby as soon as possible, amid reports hes agreed to a big-money deal with English Premiership club Bristol.Veteran winger Drew Mitchell, lock Will Skelton and back-rower Ben McCalman have been left out of the side due to a lack of recent match fitness.Mitchell will return to his French club Toulon, leaving Will Genia as the last remaining European-based Wallaby.The Fiji-born Naivalu finally became eligible to represent Australia on Monday and Cheika said he was excited to see what he could offer the team.Weve been going through a bit of a changeover in a few positions and the idea is that were going to build more depth, he said.Young prop Allan Alaalatoa is also in the mix after overcoming the medial ligament strain he suffered in Brisbane, although Cheika admitted it was touch and go whether he would be right to take on the Springboks in Pretoria on October 1.The Wallabies face Argentina at Londons Twickenham Stadium a week later.Wallabies: Allan Alaalatoa, Rory Arnold, Adam Coleman, Quade Cooper, Kane Douglas, Scott Fardy, Israel Folau, Bernard Foley, Nick Frisby, Will Genia, James Hanson, Dane Haylett-Petty, Reece Hodge, Michael Hooper, Sekope Kepu, Samu Kerevi, Tevita Kuridrani, Tolu Latu, Sean McMahon, Stephen Moore (c), Luke Morahan, Dean Mumm, Sefania Naivalu, Nick Phipps, Tom Robertson, Rob Simmons, Scott Sio, James Slipper, Henry Speight, Lopeti Timani.Phil Jones Jersey . In taking its goal tally to 99 in all competitions already this season, City delivered another demonstration of its lethal firepower at Etihad Stadium to set up a fourth-round match at home to another second-tier team -- Watford. Sam Johnstone Jersey . In Europe, top teams seem to be largely happy with their squads after spending nearly $1 billion in the off-season. And although English league clubs are unlikely to splash cash in January, Arsenal and Chelsea could be tempted to strengthen their squads with new strikers. http://www.jerseymanchesterunitedsoccer.com/womens-sergio-romero-manchester-united-jersey/ . Duchene scored two goals and had an assist, helping the Colorado Avalanche beat the Carolina Hurricanes 4-2 on Friday night to match the best 10-game start in team history. Marouane Fellaini Manchester United Jersey .J. -- Marty Brodeur beat the Pittsburgh Penguins yet again. Ander Herrera Manchester United Jersey . According the Toronto Star, a knee injury will keep Sundin out of the lineup, which includes former teammates Gary Roberts, Darcy Tucker, Tie Domi and Curtis Joseph.For a number of teams, Rivalry Weekend is more important than ever before, with a trip to the conference championship game on the line. Who will win these heated rivalries?With the help of the Football Power Index (FPI), well break down and project the best games of Week 13. As a reminder, FPIs game projections account for team strengtth, game site, distance traveled and rest.dddddddddddd Through 12 weeks, the FPI favorite has won 74 percent of FBS games, including 75 percent (70-24 record) of the top-tier games projected in this column. ' ' '