Kellen Moore "has looked like a different player this summer, throwing confidently and with better velocity and accuracy," reports ESPN.com. The Lions' No. 3 quarterback "has improved enough to be considered a potential No. 2 quarterback behind Matthew Stafford as early as 2014," the report adds.
Shaun Hill, 33, is the current No. 2 quarterback and he's on the last year of his contract.
In three preseason games, Moore has hit 20 of 30 throws for 223 yards and two touchdowns without committing a turnover. Moore should get most of the snaps Thursday at Buffalo.
"He's a very improved player," coach Jim Schwartz said. "He has played well when given the opportunities and has improved a lot from over the course of the season last year, but then particularly in our offseason program and training camp. In all facets his understanding of our offense, his understanding of what defenses do, and also physically, he's improved."