![Bradley Wiggins on his way to gold at the Rio Olympics.](/web/20161002054940im_/http://www.smh.com.au/content/dam/images/g/r/s/s/4/7/image.related.wideLandscape.460x259.grss3t.png/1475253335401.jpg)
Bradley Wiggins defends taking banned drug before Tour de France win
Sir Bradley Wiggins has again defended being granted permission to receive injections of a banned drug before three major races, including his historic win in the 2012 Tour de France.