The NFL is chock full of guys who nobody knew who they were until they became a roster member of a club and then surprised everyone en route to a Pro Bowl.
Not every star player was taken in the first round.
The first three rounds of the draft are critical to the success of any franchise. That is not to say that good - or even great - players cannot be found in the later rounds. This fact is evident on many a current NFL roster such as DE Maxx Crosby, QB Dak Prescott and S Eddie Jackson (Round 4), OG Wyatt Teller, TE George Kittle, CB Richard Sherman, WR Tyreek Hill and K Evan McPherson (5), QB Tom Brady and C Jason Kelce (6) and OT Trent Brown (7), to name a few.