Rachel Nichols, Brian Windhorst and Kendrick Perkins preview Dallas Mavericks vs. New York Knicks, which features Kristaps Porzingis returning to his old team for the first time following his trade. They also take a look at the state of affairs of the team, which might be firing David Fizdale and has struggled to build around young players like RJ Barrett, Kevin Knox and Mitchell Robinson.TheJump NBA Sports