Daniel Ray Herrera (born October 21, 1984) is an American former professional baseball pitcher.
He played in Major League Baseball (MLB) for the Cincinnati Reds, Milwaukee Brewers and New York Mets.
Herrera became well known among baseball fans both for his small stature and for his unique pitch repertoire.
He was one of the smallest pitchers in recent Major League Baseball history at 5' 6", and one of the few to throw a true screwball.