Rank The Four Majour US Sports. (Sorry not Soccer*, I'm talking Football, Baseball, Basketball and Hockey. BECAUSE YES HOCKEY IS A MAJOUR SPORT DAMN IT!) in terms of the amount of athletic ability required to be successful at that sport.
I would say...
1) Baseball - I think that baseball is the top because of the two very unique phases of athletic ability required. Hitting a baseball I think has to be one of the hardest thing to do in sports. The dexterity and mental focus is phenomenal. Combine that with the physical skills to play defensively and baseball clearly has to be the top. It taxes both the body and your wits.
2) Hockey - Some people would say hockey is about running in to people. Actually it really isn't. Hockey secretly is about not running into people. It just tends to happen a lot because well they are playing on ice. Hockey is really a fast and beautiful it requires such body control. Plus, the entire game is played on skates.
3) Basketball - In terms of skill and dexterity required to play a spot I would rank basketball almost on par with hockey. I do however have to give hockey a slightly higher ranking for two reasons. First being well, the entire game is played on ice. Secondly the goalie position is a position of such skill that really has no equivalent in any sport really.
4) Football - Rounding out the list is football. Now first, I do have to say that being a almost sub-par athlete myself I take nothing away from anyone who is able to play any sport at a professional level. Even football has a good number of talent positions such as quarterback and place kicker. However, I must rank football the lowest due to the fact that at the very core of the game of football ones proficiency can be boiled down to your ability to ether run into other players or avoid being run into by other players.
*For the record, I would rank Soccer 2nd if it was included in this discussion due to the extreme levels of physical fitness required in combination with the coordination required to dribble the soccer ball.