2.5 GPA Going Into Junior Year and Deciding to Start Pre Med


I am currently finishing up my my sophomore year and going into my Junior year with a 2.5 GPA. I was a business and economics major but decided to switch to kinesiology my sophomore year. My goal has always been to become a physical therapist but after some soul searching I really want to follow the pre Med route and become a doctor in sports medicine. Do you think it is too late to to start pre med requisites and I should stick with Physical Therapy? If I am able to boost my gpa to a 3.0 or higher and get a good MCAT, would I have a chance still. Another factor would be I play baseball at my college as well. Do they look at that factor as well? Thank you!