Darnold should start when he is ready and not before.
He has a total of 32 games playing QB at the High school and college level.
His foot work and delivery need work. He has to learn to read a Defense, audible, and take snaps under center.
His ball security issues began at the beginning of camp last year and we're such an issue they USC restructured the spring game format and just ran drills instead.
Between staring down recievers , and his awkward delivery , he will become an interception machine vs NFL D backs. The windows are much smaller and close much faster than what he has seen. Let him learn and develop.
No need to throw him out too soon, looking at the schedule, hopefully McCown can stay healthy through the first 7 games. Darnold is far from ready , especially if he is forced to face Jax, Minnesota, and Denver early.