math doesn t work. okay for him. handing great roles ever since then. the only one i know ben affleck and gili. a perfectly good movie. we ll talk about that later. talk about that later. thank you, pamela. pro golfer stacy lewis, the lpga player of the year, she hopes to regain the number one spot after this weekend in today s human factor, chief medical correspondent dr. sanjay gupta tells us how lewis reach an elite level of play despite having a severely curved spine. at age 28, stacy lewis is living the life. it s fun. i get to play golf every day for a job, not too bad. reporter: golfing since 8 years old, mostly because of the love of the game. there was a point in your life where you knew you were really good at golf? probably in college was the time that i said, wow, i could