Does anyone remember Ark St 2012. The day Bo had a heart attack/stroke during the game? Bo argued before the game and during early on-and won-that the officials-by rule I add-give us sufficient time to change personnel whenever Ark St did in their no huddle attack. Malzahn was their coach then, using his shenanigans there. He was all pissed off cuz of course, we were kinda taking advantage of this by taking our time with our changes to slow the tempo some. So yeah. it's a rule. If the offense changes pers, the def is supposed to be given legit opportunity to match. If the offense doesnt, then they can go as fast as they want. This is what made Chip kellys Oregon stuff so effective. He perfected the craft of finding a bad matchup in his favor, then that's when they put the pedal down, using the same pers and going so fast that the defense literally had zero chance to change. The teams that had defensive success against Oregon were the ones that kept themselves from routinely being in those mismatches to begin with. Preparation won it.