International Olympic Committee [IOC] president Thomas Bach has suggested entire federations could be banned from the 2016 Olympic Games as the fight against doping is escalated. Nike Air Max 270 React Triple Black . The IOC announced on Tuesday it had discovered 31 positive tests after 454 samples collected at the 2008 Beijing Olympics were re-tested, while the World Anti-Doping Agency [WADA] put its investigations manager Mathieu Holz in charge of an urgent probe into allegations of state-run doping among Russian athletes at the 2014 Sochi Winter Olympics.Bach responded with an editorial carried by both the Daily Telegraph and USA Today stating that the IOC would apply a zero tolerance policy not only with regard to individual athletes, but to all their entourage within its reach. He added: This action could range from lifelong Olympic bans for any implicated person, to tough financial sanctions, to acceptance of suspension or exclusion of entire national federations like the already existing one for the Russian Athletics Federation by the International Association of Athletics Federations. Thirty one athletes could be banned from this years Olympic Games in Rio after banned substances were found in their past samples Bach added that under such a scenario, athletes from affected nations may be required to prove their innocence rather than vice-versa.We would have to consider, whether in such contaminated federations, the presumption of innocence for athletes could still be applied, whether the burden of proof could be reversed, he wrote.This could mean that concerned athletes would have to demonstrate that their international and independently proven test record is compliant with the rules of their international federation and the World Anti-Doping Code, providing a level playing field with their fellow competitors.Holz, a former major of the French Gendarmerie and Interpol agent, will be in charge of WADAs scrutiny of the claims made in the New York Post and CBS show 60 Minutes. IAAF president Lord Coe has underlined the importance of regaining the trust of clean athletes Hosts Russia topped the Sochi medal table with 33 medals, 13 of them gold, but a New York Times report last week claimed performance-enhancing drug use was widespread, state sanctioned, and covered up.Bach said that if proved true, those involved would be guilty of an unprecedented level of criminality. Russias sports ministry said on Wednesday that it was ready to co-operate fully with the WADA in its investigation into allegations of organised doping at the 2014 Sochi Winter Games.We are willing to fully co-operate with WADA in their investigation, the ministry said.The IOCs executive board also announced on Tuesday that the results of 250 more re-tests from London 2012 would come in the next week, with further retesting of medallists from 2008 and 2012 planned too. Also See: Rio ban threat to 31 athletes Russia official says sorry Russians frustrate UKAD IOC calls for investigation Cheap Nike Air Max 270 Ispa . Marie rink got back in the win column at the Olympic mens curling tournament with a 7-4 win over the host Russian squad on Wednesday. Air Max 270 Mens Clearance . -- Rookie Victor Oladipo came off the bench to score 20 points and Glen Davis had 18, leading the Orlando Magic to a 112-98 victory over the Detroit Pistons on Wednesday night. http://www.max270cheap.com/ . A rainy day saw the former champion Djokovic handle 14th-seeded Frenchman Jo- Wilfried Tsonga 6-3, 6-4, 7-6 (7-5) under the roof on the famed Centre Court.Captain Eoin Morgan says England must improve if they are to reach the ICC World Twenty20 semi-finals after an unconvincing 15-run win over Afghanistan. England slipped to 57-6 and then 85-7 in Delhi before Moeen Ali (41no) and David Willey (20no) lifted the target to 143.Afghanistan finished on 127-9 so Morgans men remain in contention for a last-four place, but will need to lift their game against Sri Lanka on Saturday. Matt Prior discusses the reasons why England seem to struggle to beat lesser sides at ICC World tournaments The execution of plans was off by a long way here, said Morgan, who was bowled first ball shouldering arms.If Afghanistan are going to beat us we need to under-perform and we let them in by under-performing with the bat, but I thought our bowling and fielding was very good.Its very important between now and Sri Lanka that we sit down as a group and emphasise what were trying to do, make sure we have the right plans and reinforce them.This was the wicket every single one of us was expecting. The Verdict team discuss England’s batting collapse in their World T20 It was simply a matter of not adapting. Air Max 270 Black Cheap. Weve been practising similar things that we needed here but just didnt produce.Morgan might easily have been reflecting on another upset to rank alongside defeats by Holland, twice, and Ireland in ICC tournaments. Warne: England must bowl first England must chase totals to win World T20, says Warne That he was instead picking the bones from a narrow escape was largely down to Moeen and Willey, who plundered 57 runs in 5.3 overs to swing the momentum of the match.The pair also played their role with the ball, taking three of the first four Afghanistan wickets, and were well due a word of praise from their skipper. To get us up to 142 Ali and Willey played really well. It was a really important stand, said Morgan, who made a golden duck in the early malaise.The difference between chasing 120 and 140 is huge, and one of our strengths is that we bat right down the order. Where the rest of our batsmen struggled those two guys showed a great deal of application.Watch England take on Sri Lanka from 2pm this Saturday on Sky Sports 2. Also See: England survive scare Scorecard How it happened Cricket videos ' ' '