LeBron James Threatens To End His Pregame DunkingBarry Petchesky2/27/13 8:55amFiled to: LeBron JamesDunksMiami HeatNbadunk contestVideoNewsAppicTop461EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkLook what we did, internet. We ruined a good thing. LeBron James's casually thunderous, between-the-legs-and-off-the-glass slam during warmups for Sunday's game went viral, shining a light on a relatively recent Heat tradition: the layup line mini-dunk contest. But people have been getting on James (for being too awesome?), and now he's considering retiring the pregame routine. No dunks for anyone.