that is certainly the case with adam greenberg.uccess, a life changing event that ended his dream, and second chances. >> i love baseball. it's a part of who i am. it's a game that relates to life in so many ways, so i love the game. >> adam greenberg making his major league debut here. >> in 2005 adam greenberg stepped up to the plate wearing the uniform of the chicago cubs for his first ever major league at-bat. in that one moment, with that one pitch, his major league career ended. >> i turned my head just to try to get out of the way. that's where in a split second everything changed in my life. >> greenberg spent the next few years trying to recover, suffering from vertigo and unable to play. >> a lot of soul searching and struggles. the emotional side really took effect, really took toll on me because i started questioning myself. >> one at-bat. >> 2012 seven years later greenberg got a second chance, a one-day contract with the miami marlins. >> adam, we'd like to sign you to a one-day contract. >> putting him back at the pl