20 years. The English 4 × 400 m Men's relay team came in fourth at the Games. At the 2006 World Junior Championships in Beijing he finished third in 45.87 seconds. The British relay team too finished third, earning him a second bronze medal of the Championships. During 2008 Martyn had a successful season where he went comfortably under the 45-second barrier with a 44.83 at the London Grand Prix. At the 2008 Beijing Olympics, Rooney set a new personal best in the Semi-final and finished sixth in the final. He also anchored GB to 4th in the relay with a 43.7 split, second fastest ever by a Briton. It was announced on 13 September 2016 that the Russian athlete Denis Alexee, had failed a retest of his sample from the 2008 Olympics. This means that Rooney will be upgraded to a bronze medal from the 4x400m along with Michael Bingham, Robert Tobin and Andrew Steele. At the 2009 World Championships in Athletics, he reached the semi-finals of the 400 m, but finished seventh and did not compete in the final. Running with Conrad Williams, Michael Bingham and Robert Tobin, Rooney had greater success in the men's relay event, winning the silver medal behind the winning team from the United States. He started the 2010 outdoor season with a European leading time of 44.99 seconds to win at the Atletica Geneve Meeting. He went on to win bronze in the 400 metres at the European Championships in Barcelona. He won a silver medal in the relay. Rooney had a disappointing 2011, knocked out in the semi-finals of the 400 metres at the World Championships in Daegu and finishing eighth as part of the British team in the 4 × 400 m relay. In 2012 Martyn started well, running 44.92s in April at the Mt. SAC Relays in Walnut, California, his fastest time since 2008. Rooney was unable to sustain that form going into his home Olympics, and he was eliminated in the semi-final of the 400 metres, running 45.31s. In the 4 × 400 metres relay final Martyn received the baton in sixth place and ran a blistering 44.1 second anchor leg, but was just unable to overtake Deon Lendore of Trinidad and so finished fourth. In Moscow 2013, Martyn competed for GB in the 4 × 400 m relay, running 44.77 in the heats and 44.50 seconds in the