The only woman to go in Iran's wrestling arena
5 August 2014 Last updated at 00:07 BST
Christina Kelley was the first woman to be a team leader for the US National Greco-Roman wrestling squad.
She recently travelled with the team to Tehran, the host city of the 2014 Wrestling World Cup.
Women are banned from watching men's competitions in stadiums and sporting arenas in Iran, but Kelley received a surprise warm welcome.
BBC Persian's Hadi Nili spoke to her, once she got back to the US.