I think the Coach's rec may hold more weight because he know YOU and can get specific with what he's seen you overcome. From speaking to an admissions member about recommendation letters you want a letter from someone who can really elaborate on your strengths and give great detail about that strength. For example "Joe is a great student. He came to class everyday and was on time....like every other student (essentially)" VERSUS "Joe was a great player and team leader. His leadership skills were evident during (blah, blah, blah) and this would help him in PT school because (blah, blah, blah)"
....just my opinion, hope it helps!