Why Knicks' Mitchell Robinson is changing his number to 23Robinson has a touching reason for the number swap7/2/2019, 8:08 PMMar 22, 2019; New York, NY, USA; New York Knicks center Mitchell Robinson (26) and Denver Nuggets power forward Mason Plumlee (24) fight for a rebound during the fourth quarter at Madison Square Garden. Mandatory Credit: Brad Penner-USA TODAY Sports / Brad Penner