RJ Barrett shines in Madison Square Garden debut despite Knicks' loss to CelticsRookie led the team in scoring for the first time10/27/2019, 3:22 AMOct 26, 2019; New York, NY, USA; New York Knicks forward RJ Barrett (9) dunks the ball in front of Boston Celtics guard Kemba Walker (8) during the second half at Madison Square Garden. Mandatory Credit: Vincent Carchietta-USA TODAY Sportsundefined