Dalton Tucker's NFL debut came under unsettling circumstances last week against the Jacksonville Jaguars. The undrafted rookie offensive lineman watched as Will Fries – the Colts' mauling right guard – was loaded on to a cart at EverBank Stadium with a serious leg injury. The Colts were losing, 20-10, in the third quarter. The loss of a respected teammate who was playing at a high level – Fries' 86.9 Pro Football Focus grade is second-highest among guards – was jarring.