I am about to sod my backyard in my new home in Houston. I have pretty clayey soil, and I don't like the idea of having it be quite muddy when it has been raining. Is there any downside to putting down a 2" layer of sand on my soil before I sod? I could see maybe my irrigation requirements being a little higher because the grass doesn't have as much water (hopefully the sand would allow it to drain away), but is that it?

Thanks for the help,