CNN CNN Newsroom July 17, 2013 15:58:00
Season for the pitcher from the red sox, jon lester. but it's nothing compared to the challenge that he faced seven years ago as a rookie. cnn chief medical correspondent dr. sanjay gupta has his story in "the human factor". >> reporter: a 22-year-old pitch for the boston red sox when a trip to fenway park in 2006 changed his life. >> i had gotten in a car accident driving to the field. >> reporter: the accident seemed to make lingering back pain worse, sending lester to the hospital where doctors threw him a curveball. >> sitting there one minute think, you know, in my case, i have some back ...