When it comes to Justin Fields’ development, ‘time is the biggest question’ — and patience can be difficult. A look back at past rookie QBs lends insight into the process.

“The plan when we went to Philadelphia and Andy talked me out of staying at Wisconsin — we had just gone to the Rose Bowl — he says, ‘Come on and coach the quarterbacks. We’re going to take one. We’ve got the second pick,’ ” Childress recalled. “So we end up with Donovan, which is who we wanted. The big thing was I said, ‘He’ll come in and be the No. 3 guy?’ And Andy’s statement to me was, ‘When you take a guy this high, he’s got to be No. 2.’