First-year defensive coordinator Robert Livingston is working to get the Buffs ready for the Aug. 29 opener against North Dakota State. (Cliff Grassmick/Staff Photographer) Every day, Colorado defensive coordinator Robert Livingston has to get his group ready to go against the Buffaloes’ offense, and he admits it’s “not very fun.” Dynamic quarterback Shedeur Sanders makes his share of plays against the CU defense — as he does against opponents nearly every week during the season. “I think he’s a great player,” Livingston said.