This stat is a bit misleading. After some quick googling, the average age of TV watchers in general in the US is 56. The average age for Fox News is close to 70. When it comes to other sports, tennis is on the old end but most others are very close. Baseball is 57, Nascar is 58, Golf is 64, the Olmypics is 53. The only ones in relatively good shape are basketball and soccer at 42 and 40 respectively. Old people just make up a huge portion of the tv watching population nowadays. What's interesting though, is that women's tennis is actually at 55, which puts it in the upper half of sports on the list I saw.