TV is easier: it's all planned out for you and the audience is there to see a show and they are all pumped up but when you are in a comedy club you have to be really funny to win them over.
In America we have three major sports - baseball football and basketball. They get the most coverage. Then there's things like golf which mop up most of what is left. But track and field? We are way at the bottom of the totem pole.