Mark Anthony Marshall (born 5 May 1987) is an Jamaican footballer who plays as a winger for League One side Port Vale.He began his career with non-league sides Carshalton Athletic, Grays Athletic and Eastleigh, before winning a move into the Football League with Swindon Town in August 2008. He was loaned out to Hereford United in September 2009, before he joined Barnet in July 2010. He was a first team regular for the club before he received a two-year ban from football after he was found to have the stimulant Methylhexanamine in his system following a routine drug test on Boxing Day 2011. He returned to the game with Coventry City in February 2014, and signed with Port Vale in July 2014.