When it comes to playing defensive back, there’s one rule put in place by Saban that prevents the display of emotion. TUSCALOOSA, Ala. — When it comes to playing defensive back at Alabama, there’s one rule from head coach Nick Saban that all players are meant to abide by: No hand-clapping after bad plays. Speaking on the latest episode of Hey Coach, Saban revealed that he doesn’t allow his defensive backs to clap their hands together in disappointment after a bad play. “I won’t let our guys hand clap,” Saban said. “Everybody know what I mean by hand clap? Guy…