Sports Pulse: Week 17 will have a lot of nail biters. Both the AFC and the NFC still have a lot of postseason spots still up in the air. Mackenzie Salmon is here to talk all the risers and fallers heading into the final week of the regular season. » Subscribe to USA TODAY Sports: https://bit.ly/2L0ktE1 » USA TODAY delivers current local and national news, sports, entertainment,  finance, technology, and more through award-winning journalism, photos, videos and VR. #NFLPowerRankings #DallasCowboys #BaltimoreRavens