Pat Shurmur seemed to be quoting from the original football rule book on Friday. “It’s pretty simple,” the Colorado offensive coordinator said after the Buffaloes’ fifth practice of preseason camp. “The ball is oval shaped, full of air, made of leather. We want to secure it collectively and advance it. It’s pretty clear in my brain, right, and so that’s what we’re trying to do.” Sounds like a good plan, and if the Buffaloes can secure the oval-shaped leather ball and advance it with regularity, they could be pretty good on offense this season. Tasked with making sure the Buffs can advance the ball is Shurmur, who comes into his first full season as the coordinator with rejuvenation. The 59-year-old Shurmur is a long-time NFL coach whose most recent job before coming to Boulder was as the offensive coordinator of the Denver Broncos in 2020 and 2021.