Career
Guerro competed in five French Opens. He lost to Rod Frawley in the first round of the 1981 French Open and then to another Australian, Paul McNamee, in the 1984 French Open opening round. The Argentine was a semi-finalist at the Brussels Outdoor tournament in 1980, securing wins over Helmar Stiegler, Mike Cahill and Andreas Maurer.
Singles: (1)
Doubles: (5).