freestyle final, Magnussen came in second by one-hundredth of a second to American swimmer Nathan Adrian 47.53 to 47.52, winning the silver medal. Overall, he said in an interview after his swim he swam his best but unfortunately it wasn't enough. In the 50-metre freestyle, Magnussen failed to advance to the final, finishing with a time of 22.00 in the semifinals. Issues pertaining to Magnussen's behaviour before and during the 2012 London Summer Olympics became apparent, due to reports that his Australian Swim Team teammates ultimately cheered upon his defeat in the 100-metre freestyle final. Magnussen was accused of harassing other teammates and having a "big head" during the games. There were also some complaints about the 100 metre relay team, dubbed the Weapons of Mass Destruction, who were called "out of control" by fellow swimmers. 2013 World Championships & FINA World Cup In his first event at the 2013 World Aquatics Championships in Barcelona, Magnussen combined with Cameron McEvoy, Tommaso D'Orsogna, and James Roberts in the 4x100-metre freestyle relay, with the team finishing fourth place, repeating their result from the 2012 Olympics. Swimming the lead-off, Magnussen recorded a split of 48.00, finishing behind American Nathan Adrian for the second-best opening leg. Going into the relay, Magnussen held the top 100-metre freestyle time of 2013 with a 47.53 but like 2012, was not able to replicate his in-season time. In the 100-metre freestyle, Magnussen successfully defended his title, winning with a time of 47.71. He also competed in the 50 m freestyle event, but was unable to make the final, finishing ninth in the semifinals. He finished off the competition by anchoring Australia's 4x100-metre medley relay, with them going on to win the silver medal, only .09 behind the winners. Only four days after World Championships, Magnussen was back in the pool for the first stop on the short course Fina World Cup. Here he placed first in the 100 m freestyle event, finishing in a new time of 45.60 and .04 ahead of Vladimir Morozov. 2014 In January, Magnussen opened the season in very sharp form, clocking 47.59 at the Perth Aquatic Super Series, followed by a 21.88 in the 50 m freestyle. At the 2014 Australian Championships, Magnussen was favorite to win after posting 6 times under 48 seconds. In the final Magnussen swam a time of 47.92, but was beaten by Cameron McEvoy who won in 47.65.