Knicks' Obi Toppin discusses offseason work: 'I knew I had to improve a lot'Also, a note on Kemba Walker9/30/2021, 1:51 AMIan BegleyNBA InsiderAug 13, 2021; Las Vegas, Nevada, USA; New York Knicks forward Obi Toppin (1) looks to dunk during an NBA Summer League game against the Detroit Pistons at Thomas & Mack Center. / Stephen R. Sylvanie-USA TODAY Sports