Rainbow Quiz - Identify the personality - Week 18

Here is the next weekly "Rainbow" quiz , where I would be giving 7 clues (Hence the name Rainbow) about a personality. Try to discover the person in the least number of clues . You can either leave the answer as a comment / email me . Feedback/ suggestions welcome. Googling is not preferred but then its just for fun and so go ahead if you need to.

X is a remarkable sports person. The number ten became immortal thanks to X.

clue # 1 : X was born in Eastern Europe.X's first name means "Hope" in Russian.

clue # 2 : X began practicing sport at the tender age of 6, after coach (world famous) Béla Károlyi spotted X.

clue # 3 : X began competing as a member of her hometown team in early 70's.A year later at the age of 10, X participated in her first international competition winning a team gold.

clue # 4 : X became the star of the 1976 Summer Olympics in Montreal. Her "perfect" feat was one of the most memorable moments in sporting history and X became a legend overnight.

clue # 5 : In the late 80's,X defected to the United States to join her former coach who was already famous in the US.

clue # 6 :X received the Olympic Order, the highest award given by the International Olympic Committee, in 1984 and 2004. X is the only person to receive this honor twice, and was also the youngest recipient.

clue # 7 : X is active in many charities and international organizations.X is currently the Vice-Chair of the Board Of Directors of International Special Olympics and Vice President of the Board of Directors of the Muscular Dystrophy Association.

Easy one. Who is X ?