Ecuador fought back after falling behind by two goals, but the United States were able to hang on to their lead, sending their opponents home in a 2-1 win for the US.
Ecuador advanced to the knockout stages of the Copa America with a 4-0 win against Haiti in the final group stage match.
West Ham striker Enner Valencia is a major doubt for Saturdays’ early kick-off against Sunderland after Slaven Bilic revealed the Ecuadorian has met with a specialist to determine the extent of his ankle injury.
West Ham have confirmed that following a specialist appointment Enner Valencia will be side-lined until the beginning of the New Year.
Slaven Bilic remains "optimistic" that the injuries suffered by Dimitri Payet and Enner Valencia are not serious and hopes the pair can be available for the trip to White Hart Lane in game week thirteen.
Enner Valencia could start in week 10 after missing extended time with a knee injury.
Enner Valencia's rehab is going as planned and David Gold expects him to return in October.
Enner Valencia could miss up to three months with a knee and ankle injury.
Enner Valencia has suffered a serious injury to his knee and and ankle during the club's Europa League match on Thursday.
Enner Valencia injured his knee in the West Ham's match against Astra Giurgiu today and will have a scan on Friday.
West Ham forward Enner Valencia continued to produce for Ecuador as he scored the winner against Mexico in Group A play.
West Ham forward Enner Valencia flashed the quality for Ecuador that got him his move to Upton Park after the World Cup but he couldn't get Ecuador a win as the went bottom of their Copa America group.
Enner Valencia is available once again after recovering from a toe injury.
Enner Valencia is doubtful for gameweek 31 with a toe injury.