Can you identify the home nations of these Olympians?

Test your Olympic knowledge by guessing the home nations of these athletes.

The 2016 Olympics begin with the opening ceremony on Friday night, and lovers of the quadrennial games are frantically studying up on the South Korean archery team so they can show off their Olympics knowledge to their friends.

Extra Mustard has devised a quiz to see how well versed you are in the flock of competitors descending on Rio right now. Can you match these Olympians to their home countries?

Unless you are a huge fan of Vadim Kaptur (and really, who isn’t), you probably struggled quite a bit with the test. But don’t worry, because Sports Illustrated has you covered with tons of coverage of Team USA and beyond, including predictions for the podium at all 306 events of this year’s games.