The 6'0" signal-caller is one of the most accomplished QBs in the history of college football. He holds the records for wins by a starting college quarterback.
However, Moore spent the majority of his career playing against less-than-elite college competition. He is undersized and has the arm strength of Carl Lewis—hence the undrafted part of this equation.
So Moore took that resume and those obstacles with him to Detroit and battled his way to a roster spot as the Lions' third quarterback. He is on the track to becoming a reliable and valuable backup QB.
This is not something many were projecting after his first preseason game.
The Lions opened against the Cleveland Browns, and Moore played a lot but did very little, finishing 4-for-14 for 40 yards with no touchdowns and one interception. His odds of not making it in the NFL were growing by the second. However, Moore began to do what rookie QBs typically do, and that is improve.
He finished the preseason going 41-of-78 for 434 yards with one touchdown and two interceptions. He had his best performance in the Lions' final preseason game, going 17-for-30 for 211 yards with no touchdowns or interceptions.
His progression is not surprising and it is promising. He will continue to improve as he grows into whatever system he is in.
Moore is a QB who is going to succeed because of his ability to manage an offense. He doesn't have the skills that will allow him to be a game-changer, but he is a smart, decently accurate passer that a coach is going to be able to trust.
What more could a team ask of a backup?