Chile pulled off an upset by overcoming the United States 31-29 in Colorado on Saturday to qualify for the Rugby World Cup for the first time ever.

The South American nation lost last week's first leg 22-21 in Santiago, but pulled off a huge result away from home to advance by a single point on aggregate.

Not until the 75th minute of the second leg, when Santiago Videla kicked over a penalty, did Chile take the lead for the first time.

Pablo Lemoine's side, who were 19-0 down at one stage in the second leg, will now join England, Argentina, Japan and Samoa in Pool D at next year's tournament in France.

USA will have a second chance to advance when they compete in a final qualification tournament in November, where Portugal, Kenya and the loser of the Asia/Pacific play-off await.

Speaking on the back of an historic win for his side, Chile captain Martin Sigren said: "It really means so much... the sacrifices that this team has made.

"There were times when it seemed like it was uphill. I want to thank all the family who came here. They were the ones who kept us pushing."