It is pretty certain Arizona Cardinals rookie quarterback Josh Rosen is going to be a franchise player. Although back down to Earth a bit this week after an impressive first start a week ago, Rosen is the real deal.
For the remaining rookies, there have been flashes but no real guarantees to stick in the future. Probably the closest to Rosen in this case would be receiver Christian Kirk. He leads all rookie receivers with 19 receptions through five weeks.
Center Mason Cole has been hot and cold. He looked good in preseason, started out just fine.