Qatar became the first team to be eliminated from the World Cup on Friday after Group A rivals the Netherlands and Ecuador drew 1-1.
Ecuador's "Superman" captain Enner Valencia led a feisty fightback on Friday to earn the South Americans a deserved draw.
The result keeps both teams in pole position for reaching the last 16 while ending Qatar's chances of qualifying.
Valencia, 33, tapped in his third goal of the tournament from a rebound in the second half after Cody Gakpo had put the Dutch ahead in the sixth minute with a sizzling shot in a result that advanced both sides to four points.
Hosts Qatar lost their second successive game at their debut World Cup earlier on Friday to Senegal.
The African champions are third in Group A with Ecuador to come in Tuesday's final group games.
Ecuador had a subdued first half as Louis van Gaal's side looked comfortable but unhurried. But the South Americans, roared on by a large yellow-clad contingent at the Khalifa International Stadium, stepped up a gear in the second half and could have won it when Gonzalo Plata's strike hit the crossbar.
American great Serena Williams will face Australian 20-year-old Maya Joint in the first round of her eagerly awaited return to Wimbledon, a potentially tricky tie for the seven-time champion playing at the tournament for the first time since 2022.
Australia booked their spot in the knockout rounds of the World Cup on Thursday after a cagey draw against Paraguay, who are set to qualify as a third-placed finisher, while Turkey beat USA 3-2, scoring the winner with virtually the last kick of the match.
The Netherlands scored two goals in the first seven minutes of the first half en route to a 3-1 victory over Tunisia on Thursday night in Kansas City in Group F, while Japan and Sweden drew 1-1 in Texas.
Ecuador coach Sebastian Beccacece said all Ecuadoreans have a lot to celebrate on Thursday after the country's biggest World Cup result ever, coming from behind to beat Germany 2-1 and advance to the knockout stage.
New Zealand took control of the third Test at Trent Bridge with Tom Latham and Devon Conway setting a record partnership for the Kiwis against England on Thursday.