One thing that is making a substantial difference toward reducing my next-day stiffness is to get some deliberate stretching done immediately after finishing on the courts. Even before I get in the car and drive only 15-20 minutes to get back to the house, I like to get my quads, calves, lower back, etc. stretched so that the "recovery odds" are tilted a bit more in my favor. This isn't the entire solution, but I think it's an easy step toward a happy back.
Good luck there.