Marcelo Vega began his football career defending Regional Atacama, aged 14.
Then he was transferred to Unión Española, in 1991, a club with which he made his debut in the First Division and under the technical direction of Nelson Acosta he had his best performances, thanks to Marcelo they became champions of the Chile Cup for two consecutive years, in 1992 and 1993 Marcelo Vega also holds the record of winning 3 consecutive Chile Cups, 2 with Unión Española and 1 with Colo Colo. Nicknamed "Guatón" or "Tobi", due to his resemblance to the character of the homonymous children's comic (Toby and his friends), and the Chilean Maradona for his similarity in football on the field, Vega also played in Colo-Colo, Santiago Wanderers, Logroñés from Spain, MetroStars from the United States and Racing Club in Argentina, he also played at Cienciano from Peru, in addition to another stint at Regional Atacama and Unión Española.
Selected Chilean since 1986, he participated in the South American sub 16 in Peru, leaving in the FIFA ideal team together with Marco Antonio Etcheverry and other figures of that South American, he also played in the 1991 Copa América in Chile and in the 1993 Copa América in Ecuador.
In addition, he was in the Chilean squad that traveled to the 1998 World Cup in France, where he played only half time against Brazil, in fact the Chilean discount from Marcelo Salas was after a pass from Vega and later pivoting from Iván Zamorano, but he did not have a greater performance due to which he reached the World Cup injured.
[1] He is a panelist in the program Todos Somos Técnicos (We Are All Technicians) from TNT Sports (former CDF), in which he stands out for evaluating Chilean soccer players and for his great sense of humor.