Ryan Grant had a fantastic season last year. Matthews is an unproven rookie, in a good situation, but I'm not going to put him in front of a proven guy like Grant just yet.
Both teams have a good passing game to open the run. Ryan Grant was a top 10 back in many leagues last year. It's hard to imagine a rookie in a time share role cracking the top 10. It could happen, but I'd go with Grant.