Mark J. Romanczuk represented the United States in numerous international baseball tournaments.

[1] In the 2004 World University Baseball Championship, he won a gold medal.

[2] Romanczuk also won the Louisville Slugger Freshman of the Year award in 2003, alongside pitcher Glen Perkins, catcher Jeff Clement and pitcher Stephen Head, while a pitcher at Stanford University.

He played four seasons professionally after being drafted by the Arizona Diamondbacks in the 4th round of the 2005 Major League Baseball Draft.

[3] In 2016 he was inducted into the Delaware Sports Hall of Fame.