Rachel Nichols, Amin Elhassan and Byron Scott of The Jump preview the 2019 NBA trade deadline, and whether the Washington Wizards -- who are without John Wall for the season following heel surgery -- should be buyers or sellers. They then (2:48) ask the same question for the Dallas Mavericks, who are reportedly fielding offers for Dennis Smith Jr. due to his difficult fit with rookie Luka Doncic.