Hall of Fame Red Sox pitcher Pedro Martinez was at Harvard this week, where he had an entertaining chat with government professor and political philosopher Michael Sandel about his celebrated baseball career. Sandel might seem an unlikely candidate to lead a conversation with Martinez, but he’s a big baseball fan generally and an admirer of Martinez in particular. “He’s not only one of the greatest pitchers in baseball history, but he’s also deeply thoughtful and reflective about his life,” said Sandel. “He dazzled an audience of Harvard students. They were rapt listening to him tell his story in a way that connected with their lives.”. . . The night before their game against the Celtics, Dirk Nowitzki and the rest of the Dallas Mavericks dined at Davio’s, where owner Steve DiFillippo set up a flat-screen TV in a private room so the team could watch the Duke-Kentucky game and gorge on tuna tartare, crab cakes, Philly spring rolls, and lobster bisque.