professional football by a mile
College sports are typically more watched than pro sports. This is because there are a lot of college sports fans.
professional sports
football
"Football/Soccer" Soccer is the most watched of all...
hockey
Football by many many millions of people.
a football player
Hell no
No. If you compare them at a sporting goods store, you will see the regulation NFL ball is more elongated for passing.
Professional Golf
If you are asking about college football, I believe all fifty states have at least one college with a football team, and some have many more than one. If you are asking about professional football, there are a number of states that do not have a team at this time: among them are Maine, Mississippi, Alaska, Hawaii, Vermont, and North Dakota.
Professional Bicycling is the most watched sport in the world based on the number of people who watch it but I am unsure how many "games" or races occur within each year.