 He won a bronze medal in the 4x100 metres relay at the 2010 Central American and Caribbean Games in Mayaguez alongside Prince Kwidama, Curtis Cock and Churandy Martina.Mariano finished sixth in the 60 metres at the 2011 European Athletics Indoor Championships in Paris, representing the Netherlands for the first time.Mariano ran his personal best over 100 m and 200 m at the UTEP Invitational on 10 April 2010.