The key to Rusty Hardin’s extraordinary career, in his view, has been his ordinariness. He is just a regular guy. A regular guy whose expansive office on the 22nd story of a Houston high-rise frames the city’s skyline. A regular guy who is famous for his ice-cream-colored suits. A regular guy whose walls are lined with newspaper photos of his superstar clients, including Roger Clemens, Wade Boggs and Warren Moon.