Adam Greenberg Returns to Major Leagues After Hit to Head

The baseball player returns after taking a 92-mph fastball to the head seven years ago.
3:00 | 10/03/12

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Transcript for Adam Greenberg Returns to Major Leagues After Hit to Head
heartwarming comeback story now. Adam greenberg of the marlins suffered a devastating injury in his first major league at-bat. But last night, he scored big with the fans. Abc's matt gutman was there. Reporter: Those roars, the standing ovation, all for this man, adam greenberg. Not because he's a star. But because he is proof second chances really do happen. Hearing my name and my number, it's a dream come true. Reporter: It took greenberg seven years to get his second big league at-bat tuesday. Here we go. Reporter: A small moment, perhaps. But for the 31-year-old, this was his real-life "field of dreams." That's because greenberg's dreams were stripped away from him in 2004. Hit in the head, the first pitch of his first at-bat, a 92-mile-per-hour fast ball. Here's greenberg. Oh, man. He got hit in the head. Reporter: Greenberg could have given up. I'm not going to be a 15-minute of fame, you know, one-pitch guy in the major leagues. Reporter: He didn't. Instead, for seven years, toiling in the minors. I am going to get back to the big leagues. Reporter: His fans, leading an online campaign to get him just one shot. One at-bat for greeny. Reporter: It paid off. The florida marlins agreed to sign greenberg a one-day, one-at-bat ract. It was magical. The energy in the stadium was something i never experienced in my life. Reporter: By the way, adam greenberg didn't want any softballs. What he wanted was a real second chance. And he got it. Strike one. He came after me like a big-league hitter. Reporter: Greenberg's at-bat lasted barely 30 seconds. Three pitches, two swings, one strikeout. But worth it. He made it back. He got his way back. And the crowd will see him again. Reporter: With that giant smile. For "good morning america," matt gutman, abc news, miami.

This transcript has been automatically generated and may not be 100% accurate.

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