According to ESPN, it's Boxing with Soccer coming in at an overall RANK of #10.

Take a few minutes and sort the data by column headings and five interesting results appear:

#1 Agility
#2 Analytic Aptitude
#8 Endurance
#9 Speed
#12 Durability

Reference link:
http://sports.espn.go.com/espn/page2/sportSkills?sort=durability#grid

The all-encompassing #10.

I can't believe fishing came in after billiards!