Brazil is hosting the 2014 World Cup and 2016 Olympics, hoping to boost its economy and global reputation. However, mega sports events have had mixed legacies. Some forecasts predict large economic and tourism gains for Brazil, while risks include economic losses, human rights violations from forced evictions, and failure to generate benefits for the public. Assessing the potential legacy depends on Brazil's ability to learn from mistakes of other host countries and ensure gains are inclusive and sustainable.