A core player in the Islanders defense. Started playing soccer with local clubs in Puerto Rico before joining the Bolletieri Soccer Academy (now known as IMG Soccer Academy) in Bradenton, Florida. He played college soccer with Barry University where he was a starting defender all four years. He was named First Team All Conference his freshmen and sophomore year and Second Team All American his junior year. In 2003, Marco was drafted by the NY/NJ Metrostars in the MLS Superdraft but decided to sign with the Seattle Sounders of the USL First Division. In his first season with the Sounders he moved up to the forward position and scored four goals and four assists for a total of 12 points. In 2004, he moved back to his natural position where he was the starting right back in the season they reached the USL First Division Finals. In 2005, he returned to his homeland and joined the Puerto Rico Islanders where he scored 2 goals as a defender. He is a current member of the Puerto Rican National Team and his last cap was in the 2005 Gold Cup Qualifiers in Trinidad & Tobago. He spent the month of November 2005 training with Chile’s First Division side Club Palestino. In 2006, he was named to the Team of the Week four times. Marco was named team captain for the Concacaf Champions Cup Qualifiers, and returns in 2007 for his third consecutive season with the Islanders.