Notes: Raiders passing on Calvin Johnson named among history’s biggest draft blunders

Photo by John Dunn/Sporting News via Getty Images via Getty ImagesWhether it’s wasting a top pick on an eventual bust or finding a late-round diamond in the rough, drafting is not an easy process.

There is no blueprint. There is no real way to know that a player will work out — that their success in college will translate to the NFL. The stakes are high, but each year, league executives gather their notes and as much courage as they muster and take a chance on player after player. Inevitably, many regret their picks. I’m sure former Lions general manager Bob Quinn would take a few back—ever heard of the Lions’ second-round curse?

But that’s the name of the game. CBS Sports’ Tyler Sullivan…