Racing PositionsWhy Christian McCaffrey will again be Panthers' workhorse -- immediately2YDavid NewtonCam Newton's injury puts spotlight on Panthers' struggling backup QBs3YDavid NewtonBroncos' struggles at quarterback have mirrored OL issues3YJeff LegwoldSource: Center Paradis to sign with Panthers3YDavid NewtonCarolina Panthers' 2019 free-agent signings: Paradis will replace Kalil at center3YDavid NewtonBuffalo Bills' 2019 free-agent signings: John Brown a deep threat for QB Allen3YMike RodakPanthers' free-agent targets could center on a center3YDavid NewtonJets' offseason mission: Protect QB Sam Darnold3YRich CiminiBroncos take plenty of needs with them to NFL scouting combine3YJeff LegwoldBroncos have plenty of needs to fill in free agency3YJeff Legwold