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 PostsPogba ready to prove his worthSilva lets his football do the talkingMixed emotions for relieved Mexico Russia 2018 press conference to be streamed liveFive reasons for Germany’s historic exitMatic: We’ve put Serbia back on the football map