I’ve answered this here https://news.ycombinator.com/item?id=40965857

There’s plenty of amateur footballers more skilful than professionals, yet can’t make it because they lack the physical attributes (speed/strength/stamina). I’ve watched high skill teams shredded by a team that just shoved them off the ball and outran them. Barcelona’s style under Pep wasn’t mostly skill, it included a HUGE amount of physical fitness to maintain a press to win the ball back.

A massive part of Rooney’s rapid decline was his shit lifestyle reducing his fitness and speed as he grew older.

I'm a keen cyclist (doing and watching); the elite differentiator is aerobic capacity (anaerobic for sprinters) not skill. Going fast up a hill wins GC and require no skill. Going fast down is more skilful but less important.