The basket was shaking and Tyson Chandler was screaming, definitely toward, though maybe not at the voices he recognized near the Dallas bench. His more important words came long before that dunk that helped the New York Knicks put away the Mavericks. Chandler told his teammates at halftime not to let their perfect record get ruined, and they responded with a 104-94 victory Friday night to improve their best start in nearly two decades to 4-0.