Edwin "Eddie" Boison, known as Cow-Bell Man, is a stadium fixture for the New York Mets. He can be seen at nearly every home game at Citi Field, wandering around the concourses while banging a cowbell. He typically wears personalized jerseys with the nom de plume CowbellMan. In 2009, he wore a batting practice jersey with the number 15, which from 2005-2011 was assigned to outfielder Carlos Beltran. Prior to the Mets' acquisition of Beltran, Cow-Bell Man's jersey featured the number 10, worn by Endy Chavez. Cow-Bell Man is usually seen strolling around Citi-Field interacting with the fans.