Varela's late header saves Ronaldo's World Cup hopes
US goalkeeper Tim Howard (R) reacts after goal from Portugal's forward Silvestre Varela (2nd L) during a Group G match between USA and Portugal at the Amazonia Arena in Manaus during the 2014 FIFA World Cup on June 22, 2014 - by Francisco Leong
The Americans had looked to be safely into the last 16 after second-half goals by Jermaine Jones and Clint Dempsey saw them come back from 1-0 down -- a goal by Nani -- to lead.
However, with only seconds remaining one sublime cross from a pretty anonymous Ronaldo was met by Varela and it soared past Tim Howard to give them a lifeline as a further defeat after the 4-0 hammering by Germany in the opening game would have seen them out.
The United States -- who reached the last 16 in 2010 only to lose to Ghana -- are on four points along with Germany, who they play in their final group game, and who their coach Jurgen Klinsmann coached at the 2006 finals.
Ghana and Portugal both have one point and play also on Thursday.