How do you become a Physical Therapist?

Hello i have been doing research on this question for dayss and i am left with confusion and questions. From what i have absorbed it seems i have to go to college take biology chemistry and physics classes, then get a doctoral degree in physical therapy (somehow??) and then go to a physical therapy school. which seems pretty wrong. Can anyone explain to me a simple step by step process on how to do this. I am interesting in the sports medicine field. Thanks!