Very interesting. From Wikipedia, currently, as per the 1997 regulation, gymnasts must be at least 16 years of age, or turning 16 within the calendar year, to compete in senior-level events. Carly Rae Patterson, born at February 4, 1988. When she was 15, at 2003. At the 2003 World Gymnastics Championships in Anaheim, California, she earned the all-around silver medal —the first time an American woman had won an all-around medal at that competition since 1994. Anastasia Valeryevna Liukin, born at October 30, 1989 (1989-10-30) . When she is 14, at 2003. Pan American Games Gold Santo Domingo 2003 Team Gold Santo Domingo 2003 Balance beam Gold Rio de Janeiro 2007 Team Silver Santo Domingo 2003 All-around Silver Rio de Janeiro 2007 Balance beam Bronze Santo Domingo 2003 Uneven bars Bronze Santo Domingo 2003 Floor exercise