Grubbs was a SuperPrep All-American and an Alabama Sports Writer's Class 4A All-State selection as a linebacker. At 6-4, 250 as a high school senior, he was recruited as a defensive end, though.
Grubbs was a highly regarded high school athlete who excelled as a linebacker, earning SuperPrep All-American honors and being named an Alabama Sports Writer's Class 4A All-State selection. His size and physical presence made him an attractive recruit for the defensive line, but he ultimately pursued a career in that position.