Lionel Messi must shrug off the gruelling demands of a globe-trotting schedule if he is to fulfill his dream of leading Argentina to a first major tournament victory in 23 years at the Copa America Centenario.

Rising teenage star Gabriel scores on his international debut as Brazil warm up for the Copa America Centenario on Sunday with a 2-0 victory over Panama.

Hawk-Eye technology will be used to decide whether the ball has crossed the goal-line at next month's Copa America Centenario in the United States.

Neymar says sitting out of the Copa America is worth it for the chance to lead Brazil to gold in front of a home crowd at the Rio Olympics in August.