Knicks rookie Mitchell Robinson helped off court after spraining ankleRobinson suffered the injury during the second half Wednesday night against the Nets10/4/2018, 2:05 AMOct 3, 2018; Brooklyn, NY, USA; Brooklyn Nets guard Spencer Dinwiddie (8) goes up for a shot against New York Knicks center Mitchell Robinson (26) during the first half of a preseason game at Barclays Center. Mandatory Credit: Andy Marlin-USA TODAY Sports / Andy Marlin