Juan Martin Del Potro began his day stuck in an elevator, then beat No. 1 Novak Djokovic

Juan Martin Del Potro of Argentina had quite a day on Sunday at the 2016 Olympics in Rio. He started his day stuck in Olympic Village for nearly an hour too long.

This is how Delpo started the day: trapped in an elevator at the Olympic village for 40 minutes. pic.twitter.com/EFNmOKqIwE

- Jorge Viale (@jorgeviale) August 7, 2016

Then he went out and upset the No. 1 tennis player in the world, beating Novak Djokovic in straight sets, 7-6(4), 7-6(2) on Sunday to advance into the second round. "I cannot believe this moment," Del Potro said.