Baltimore Orioles outfielder Adam Greenberg watches the path of a fly ball during the sixth inning of an exhibition spring training baseball game against the Pittsburgh Pirates, Sunday, March 24, 2013 in Bradenton, Fla.
MIAMI, FL - OCTOBER 02: Adam Greenberg #10 of the Miami Marlins bats for the first time since being hit in the head by a pitch in 2005 in his first Major League at-bat against the New York Mets at Marlins Park on October 2, 2012 in Miami, Florida. Greenberg struck out.
Miami Marlins' Adam Greenberg acknowledges the fans after the Marlins won 4-3 against the New York Mets in 11 innings of a baseball game in Miami, Tuesday, Oct. 2, 2012. Greenberg struck out on three pitches against Mets R.A. Dickey when he batted for the first time in seven years in the sixth inning. Greenberg signed a one-day contract before the game, his first since he was beaned in his major league debut in 2005.
Miami Marlins player Adam Greenberg looks up in the dugout before batting practice before the Marlins met the New York Mets in their MLB National League baseball game in Miami, Florida, October 2, 2012. Greenberg was hit in the back of the head by a 92 miles per hour fastball in his first plate appearance as a Chicago Cub rookie in July 2005. Helped off the field and hospitalized, he never returned to the major leagues after that ninth inning pinch-hit appearance against the Marlins. Greenberg will be guaranteed one at-bat in Tuesday's game against the Mets, Marlins president David Samson told NBC's Today Show last week.
Miami Marlins' Gorkys Hernandez, right, hugs Adam Greenberg in the dugout after Greenberg's at-bat during the sixth inning of a baseball game against the New York Mets in Miami, Tuesday, Oct. 2, 2012.
Miami Marlins' Adam Greenberg wipes his face as he heads to the dugout after striking out against the New York Mets in the sixth inning of a baseball game in Miami, Tuesday, Oct. 2, 2012. Returning to the big leagues seven years after he was beaned, Greenberg fanned on three pitches as a pinch-hitter. He signed a one-day contract before the game and batted leading off the sixth inning against Mets 20-game winner R.A. Dickey.