It's still very early in the process, but the Dallas Cowboys look like they have a good one in defensive coordinator Christian Parker . Based on photos coming out of rookie minicamp , it's clear that Parker is next-level dedicated to his craft. If this Cowboys defense doesn't improve in 2026, it won't be because of a lack of effort on Parker's part, that's for sure. Parker has been very hands-on with the players at the team's rookie minicamp, and that's something the rookies appreciate, including Caleb Downs, who spent extra time with Parker after practice on Saturday, according to Tommy Yarrish of DallasCowboys.com. "I feel like that's when you learn fully what the coach means," Downs said.…