Watch Utah's John Collins throw down game-winning dunk with help of Dallas defensive lapse.
Dallas keeps finding new ways to lose in the clutch. Thursday night the Mavericks dropped their fourth game in a row — by a total of eight points — when a defensive miscommunication left Luka Doncic in no-man's land and Utah's Jordan Clarkson whipped a pass right past him to John Collins for a game-winning dunk.