As a child, Jordan Spieth was a golf prodigy. He played in his first professional tournament at just 16 years old, and by the age of 23 he had won three of golf's four major tournament titles. In this week's "Sunday Sitdown," Willie Geist got together with the young star at his home course in Dallas as he prepared to defend his British Open title. Spieth talks about his meteoric rise to the top of the PGA rankings, the comparisons to golf legends such as Jack Nicklaus and Tiger Woods, and how he's managed to keep his life as normal as possible during it all.