First-round grades | Rounds 2-3 grades | Team grades | Conor Orr’s Best and worst | Way-too-early mock draft | Best picks of the draft | Most improved teams | AFC likely draft busts | NFC likely draft busts It was the week before the draft, and with almost a full year’s work of scouting invested , it was time for GM John Spytek and his personnel staff to give Raiders ownership a look. On the screen was what they call the “135 Board,” a vertical stack of the draft’s best players. Controlling owner Mark Davis looked at it and smiled. “I see the quarterback’s up there,” he said. “Yep,” Spytek responded, “and he’s going to stay there.” As big reveals in sports go, this wasn’t exactly LeBron James telling Jim Gray he was leaving Cleveland for Miami. And that was for a good reason. No one really needed to tell Davis—or anyone else—that the Heisman Trophy winner and national champion from Indiana , Fernando Mendoza, was going to be the first pick in the draft. The owner knew it. Spytek knew it.…