Host and former champions United States beat guest team Saudi Arabia 1-0 on Thursday night to advance to the quarterfinals of the Concacaf Gold Cup.
Crystal Palace defender Chris Williams scored for the Americans in the 63rd minute to send them top of Group D with maximum six points from two games.
In the other game in the group, Trinidad and Tobago and Haiti drew 1-1.
Meanwhile, Jamaica face Guadeloupe in a must win Group C game in San Jose, California on Friday.
Both teams lost their opening game.