Some significant late-season changes have been made to the NFL's concussion protocol -- including the placement of a central unaffiliated neurotrauma consultant (UNC) in the league's command center for all games -- following incidents that have triggered investigations. The changes were implemented last weekend, when a UNC was stationed at the command center that has been primarily utilized for game replay reviews, Dr. Allen Sills, the NFL's chief medical director, told ESPN. "We are constantly looking at the protocol and how it's applied and trying to get better," Dr. Sills said. "The process happens through the season." While Seattle Seahawks quarterback Russell Wilson's Week 10 concussion investigation resulted in a $100,000 fine to the franchise this week, it was the Dec. 10 incident involving Houston Texans quarterback Tom Savage that brought urgency with the latest changes even before the investigation into that incident is...