Every coach says it, and every coach who has won anything knows it’s true. You can’t run it, you can’t throw it, and you can’t close out a fourth quarter without the big guys up front. Houston keeps building that way, and tonight the Cougars get a long look at the future of the trenches. Sean Sherman, known around Anna, Texas, as “Big Sherm,” will be inside TDECU tonight when No. 20 Houston hosts No. 18 Oklahoma State in a Top 25 showdown. He is a 3-star interior offensive lineman in the 2028 class and the No. 64 IOL in the country. He holds 24-plus offers, and they come from every major…