Iran defeated Guatemala 4-2 at the Arena Amadeu Teixeira in Manus, Brazil.
Mohammad Keshavarz, Ali-Asghar Hassanzadeh, Vahid Shamsaee and Mohammad Taheri scored for the Iranian outfit and Guatemala’s Acevedo and Gonzalez were on target.
Iran opened the 2011 Grand Prix de Futsal Group C with a win over Belgium on Sunday. The Iranian team also fired past the United States 8-0 in its second match on Tuesday and then defeated Uruguay 3-1.
The Asian powerhouse will play host Brazil on Saturday in the semifinals.
In the other semifinals match, Russia will play Argentina.
The Grand Prix de Futsal is an international futsal competition of the same kind as the FIFA Futsal World Cup but with invited nations and held annually in Brazil. It was first held in 2005.