Andre Tourinho of Brazil had eight birdies in his round of 6-under 66, giving him a one-shot lead Friday going into the weekend of the Latin American Amateur with a Masters invitation on the line.
Tourinho was among several players who had an easy time at Pilar Golf Club.
Matias Domingues of Chile also had eight birdies and tied the course record with a 65. Joaquin Bonjour of Argentina had nine birdies in 14 holes and was in the lead until putting two balls in the water on the 17th hole and making a quadruple bogey.
Tourinho was at 8-under 136.
The winner gets a spot in the Masters and is exempt into the final stage of qualifying for the U.S. Open and British Open.