NORMAN — There's a lot of differences for David Stone compared to a year ago.
The biggest difference is in his physical appearance. When the former five-star prospect arrived as a true freshman last spring, he weighed in at 275 pounds. This spring, he clocks in 313 pounds — nearly a 50-pound difference. There's also just a clearer confidence on the practice field for Stone, who now has a year under his belt. He's a more solidified piece in the defensive tackle rotation.
But the biggest difference might not be as noticeable to outside viewers.