The Facts: Jay Ajayi suffered a concussion in Monday's practice and is expected to miss at least one week.

Diehards Line:This is certainly not the start to the season Ajayi wanted, but it should not be a cause for concern for fantasy owners. He is coming off of a big season and looks to carry that over into this one. There is no need to move him down in the rankings at this time and he should still be considered an RB1. Barring any setbacks, he should be ready to go at the start of the season.