While we're talking about sportsmen who've broken down boundaries, here's a third in a row! It took an incredible about of courage for Michael Sam to come out as gay before he faced the NFL draft; there had never previously been an openly gay footballer in NFL history, and some believed that making his sexuality public would end his career before it started.
When he made the draft and was picked up by the St. Louis Rams, an emotional Sam kissed his long-term partner Vito Cammisano on live television; the first time a same-sex kiss had been transmitted during a live sports broadcast. They went on to get engaged in January 2015. There was sadly never to be a wedding; they separated in June of the same year; but have remained friends. Sam ultimately had to walk away from football to focus on his mental health, but now works as a motivational speaker.