|Full name||Márcio Glad|
|Date of birth||23 September 1980|
|Place of birth||Novo Horizonte, Brazil|
|Height||1.78 m (5 ft 10 in)|
|2008||→ Santos (loan)||3||(1)|
|2011||→ Goiás (loan)||23||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 21 May 2015.
During his early career, Guerreiro rarely settled with a club, representing Sociedade Esportiva Matonense, Guaratinguetá Futebol, Sociedade Esportiva do Gama and Figueirense Futebol Clube. In 2003, he established at Sociedade Esportiva Palmeiras, moving to FC Metalurh Donetsk in the Ukraine after four years but returning unsettled to Brazil shortly after, joining Santos FC on loan.
In November 2008, while at Real Murcia in the Spanish second division, Guerreiro assaulted the referee in a 3–5 loss at Xerez CD, after a penalty kick was awarded to the opposition and he was sent off for a second bookable offense. He was banned with four games, and fined by the club.
In October 2009, Guerreiro returned to his country, signing with for one year with Avaí Futebol Clube.
- Guerreiro, del Murcia, a cabezazos con el árbitro (Murcia's Guerreiro, headbutting with the referee); El Mundo, 3 November 2008 (Spanish)
- Competición suspende a Guerreiro cuatro partidos (League suspends Guerreiro four matches); Sport, 5 November 2008 (Spanish)
- El Murcia recurre por Marcinho pero lo castiga con una multa (Murcia appeals for Marcinho but fines him); La Opinión de Murcia, 4 November 2008 (Spanish)