Defender Chris Richards scored with a flick of the ball off a second-half free kick to lift the United States to a 1-0 win over Saudi Arabia, sending the Americans on to the CONCACAF Gold Cup quarterfinals.

After defeating Saudi Arabia 1-0 in Austin on Thursday, the United States men's national team have advanced to the knockout stage of the Gold Cup. They stopped the Saudi Arabia attack from having chances at Matt Freese's net,

Why is Saudi Arabia playing in the Concacaf Gold Cup? Here's everything you need to know about the U.S. men's next challenge.