The United States of America has earned the most medals at every Summer Olympics dating back to 1996. But will China, Great Britain or Germany be able to put an end to that streak this August in Rio?
You hopefully don't need any help deciding which country you should be rooting for next month, but knowing where countries are likely to finish in the total medal count isn't nearly as easy.
We looked back at how the top countries fared in each of the past four Summer Olympics—noting their biggest strengths and weaknesses—to get a sense of what to expect this year.