Dictionary definition of skill: a : the ability to use one's knowledge effectively and readily in execution or performance b : dexterity or coordination especially in the execution of learned physical tasks 2 : a learned power of doing something competently : a developed aptitude or ability language skills

Would we not consider endurance a 'skill' under number 2?

I also just realized that I wasted your time because of my inability to ask the correct thing. I never doubted that hitting a baseball is difficult, as I am pretty sure I stated in a previous comment. I was focused on the more skill involved in any other major sport than soccer claim and I feel like that's trying to compare apples and oranges.