The contract terms will probably indicate if Joe Dahl is a likely candidate to start on opening day next month. My guess is he will be the Lions starting LG at Arizona.
If Joe Dahl builds on his performance in the pre-season opener vs. the Patriots in the next two pre-season games, I think he has a great chance of being the Lions starting LG at Arizona next month.
This article was written before Kenny Wiggins was listed as the Lions starting LG on the Lions 1st Regular season depth chart. It remains to be seen if that changes when the Cardinals game begins.