How strong do you think these are?

[rmatha]

I have been out of school for going on 4 years. I started my own business following college so do not have an employer to ask. I have received LOR's from the head football coach at a Big Ten University, my academic advisor from undergrad, and my position coach from college as well. Would you think those will suffice.

[lawlawlaw77]

No.

Two letters should come from professors that you have had classes (hopefully more than one or other experiences) with.

If you want to throw in a football letter that's great but I don't see much value in it.

You need two solid academic letters, the other one or two can be more for character reference.