Olympic rhythmic gymnastics champion Mamun retires at 22 Unknown 07:12 FOX Sports Digital, IFTTT MOSCOW (AP) Margarita Mamun, the Olympic all-around rhythmic gymnastics champion, has retired at the age of 22. from FOX Sports Digital http://ift.tt/2AiXGvr via IFTTT Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsThe 313: Happy Halloween (VIDEO)European soccer weekend: What to watch in the main leaguesUnbeaten Patriots prepare best they can for Ravens' JacksonGasper, McKenzie, Turner among players for early trainingLondon Eye: Watson travels abroad after taking foot to faceMSU's Joe Bachie ineligible after testing positive for banned supplement