The Lakers were coming off a 34-point loss at Dallas in which the Mavericks shot a whopping 62.2 percent from the field. It put a bit of a damper on a 2-1 road trip that began with impressive victories over Atlanta and Houston."Do we have to get better on defense? Of course, we do," first-year coach Byron Scott said ahead of the Lakers' game Sunday night against the visiting Denver Nuggets.