Ten months later, a different-looking Celtics team found itself in a similar position: 4.7 seconds left, with the ball, this time tied at home against the New York Knicks. Tatum again curled to the baseline and received the inbounds pass — this time from Marcus Smart. The third-year forward rose and buried the jumper, putting Boston ahead with 1.3 seconds to go. It was Tatum’s first career go-ahead basket in the final five seconds and continued both Boston’s hot start and the positive vibes that emanate from the team. “Jayson had that opportunity to get that last shot, and he made it,” Walker said. “What more can I want? He won, he made a last-second shot, it was an amazing game, and I’m just happy. I’m just happy for my teammate.”