For the first time in 15 years, Nick Saban found himself working on NFL Draft night. Only this time, he wasn’t in a war room in Miami, but on set with College GameDay – and he drew rave reviews. When it came time for the former Alabama coach to make his ESPN debut, though, it felt very familiar as he went through the film. “It’s a lot of preparation,” Saban said ahead of the Irondale Prayer Breakfast. “You’ve got to watch probably 200 players to be able to go up there and do the first three rounds. A lot of research, background information. Almost as if you were in the NFL getting ready for th…