 He led the team to victory in the 2007 South American Youth Championship, scoring four goals in the process.He was expected to lead the team again in the 2007 FIFA U-20 World Cup held in Canada in July 2007 and was named in their squad, but an injury in training kept him from playing for three weeks, leading to his withdrawal from the squad.In October 2006, Lucas was included in the senior Brazilian squad for friendlies against Kuwaiti club Al-Kuwait and Ecuador.