LeBron James missed a game-tying layup with just seconds remaining as the Los Angeles Lakers suffered an upset 104-102 defeat to the Brooklyn Nets on Tuesday. James looked poised to force overtime at the Staples Center as he drove towards the basket with the Nets holding a two-point lead. It was a dramatic finale to a see-saw battle between the Western Conference-leading Lakers, who have already clinched a postseason berth, and the Nets, who occupy the last of the Eastern Conference playoff spots.