Country Superstar Tim McGraw Visits CBS SUNDAY MORNING Today

Country superstar Tim McGRaw seemingly has it all - a picture-perfect marriage to Faith Hill and a two-decade run of success - but he tells Tracy Smith he still feels like an underdog, in an interview to be broadcast on this weekend's CBS SUNDAY MORNING WITH Charles Osgood.

McGraw tells Smith he needs to feel that way because he's still got a lot left to do. "I don't want myself to feel like I've done everything that I wanted to do and that I've accomplished everything I wanted to accomplish," he says. "It may not be the right philosophy or it may not be a healthy philosophy in the long run... but I think I need to feel that way.

"I want to feel like I have something to prove," he adds. "I want to feel like I'm in a corner sometimes and need to fight my way out of it."

McGraw attributes his fighting spirit to his days of playing baseball in college and the mindset of a relief pitcher with the outcome of a big game on his shoulders. "You got to come in with the bases are loaded and strike somebody out," he explains.

In a wide-ranging interview, McGraw talks with Smith about his home life in Nashville, his marriage to Faith Hill, his family and he gives Smith a tour of his classic car collection. He also talks about the impact of learning that former Met's pitcher Tug McGraw was his father, though initially McGraw wanted nothing to do with him when he was a boy.

"I think I got from finding out that Tug was my father and seeing his success - and the things that he did with his life," McGraw says, "I think maybe unintentionally... it gave me a drive and it gave me a realization that maybe I could do something with my life."

Smith's interview with McGraw will be broadcast today, Feb. 3 on CBS SUNDAY MORNING (9:00 AM, ET) on the CBS Television Network. Rand Morrison is the executive producer.