As the only one to have played at Madison Square Garden, SMU’s Markus Kennedy had plenty of advice for his teammates on the renowned building. But Kennedy had a more efficient plan. He simply showed the Mustangs. The big man dominated with 21 points, nine rebounds and three steals in Tuesday’s win over Clemson. His one-on-one play against whoever was under the basket was probably the biggest mismatch in the game. Kennedy played a handful of games at the Garden when he was at Villanova. “I can’t give myself the ball; my teammates did a great job of getting it go me,’’ Kennedy said. “The guards spread it out too with their outside shots. Everybody did a great job. One on one, I guess I had a good game.” Star power: SMU coach Larry Brown routinely brings in big names to speak to the players before practices. At the Tuesday morning shootaround, Bob Knight was the featured guest. “When I got the UCLA job, I spent some time with him in Bloomington [Ind.],’’ Brown said. “He was a big part of my life. People say all these things about him. But I’ve coached a lot of his former players [in the NBA], and they all love him.’’ Knight’s message on Tuesday? “He talked about his love affair with New York and told the players what a great experience it is to be playing in the NIT,’’ Brown said.