Gold-medal winning gymnast Nastia Liukin will make her debut as an Olympic gymnastics commentator at the 2016 Games in Rio The five-time Olympic medalist and two-time all-around national champion will join former Olympian Tim Daggett Al Trautwig and coaching legend Bela Karolyi as an NBC analyst Liukin, who retired from the sport in 2012, said 2016 could be “the biggest year ever,” for women’s gymnastics