The opening game of the 2022 FIFA World Cup was one Ecuador fans will remember for years to come. For host nation Qatar, it's one they'll want to wipe from their memory before their next match against Senegal on Friday.

Here's what happened in the World Cup on Sunday and what to watch for tomorrow.

QATAR DISAPPOINTS IN WORLD CUP DEBUT AS EXCADOR’S ENNER VALENCIA SHINES IN OPENING MATCH VICTORY

Ecuador 2, Qatar 0

Qatar became the first host nation to lose its opening match of the World Cup, as they fell to Ecuador 2-0. Host nations had 16 wins, six draws and no losses in their openers entering Sunday.

Qatar now has to get three points against the Netherlands or Senegal, which are ranked eighth and 18th in the world, respectively. 

Qatar's Saad Al-Sheeb reacts to a goal by Ecuador

A dejected Saad Al-Sheeb of Qatar during the FIFA World Cup Qatar 2022 Group A match between Qatar and Ecuador at Al Bayt Stadium on November 20, 2022 in Al Khor, Qatar.  (James Williamson - AMA/Getty Images)

Meanwhile, Ecuador gained three valuable points in a top-heavy group.

Goal of the day

Even in a wide stance with his arms stretched out, Qatar goalkeeper Saad Al Sheeb couldn't stop Enner Valencia's perfectly-placed header from going in. It was Valencia's second of the day.

CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COM

Must-see moment

Enner Valencia scores his first goal of the 2022 World Cup

Enner Valencia of Ecuador scores his sides first goal during the Group A - FIFA World Cup Qatar 2022 match between Qatar and Ecuador at Al Bayt Stadium on November 20, 2022 in Al Khor, Qatar.  (Pablo Morano/BSR Agency/Getty Images)

Before Valencia scored the World Cup-opening goal from the spot — and the eventual follow-up header — he scored what would have been the first of his hat trick. Had the goal stood, he would have been just the third player in World Cup history to score a hat trick on the opening day of the World Cup.

But the goal was wiped off when VAR review ruled the play offsides.

Things really get cooking Monday with three matches on the docket, including the opener for the United States.

England vs. Iran, 8 a.m. ET on FS1

England hasn't won an international match since March 29. That, combined with their history of disappointment on the World Cup stage, has led to many people tempering their expectations for a squad that, on paper, is among the most talented of the tournament. 

A convincing win against Iran — a team that's expected to have a strong fan presence — would turn some of the Three Lions' doubters into believers; a draw or a loss would only add more fuel to the fire.

CLICK HERE TO GET THE FOX NEWS APP

Senegal vs. Netherlands, 11 a.m. ET on FOX

Before a knee injury forced Sadio Mané to withdrawal from the tournament, the Senegal-Netherlands matchup was widely viewed as the tiebreaker for the top of Group B. While that might still end up being the case, the Netherlands has to feel better about their chances than they did at the start of the week.

United States vs. Wales, 2 p.m. ET on FOX

Tim Weah vs Uruguay

Tim Weah #21 of the United States before a game between Uruguay and USMNT at Children's Mercy Park on June 5, 2022 in Kansas City, Kansas. ( Robin Alam/ISI Photos/Getty Images)

If we’re to assume the best-case scenario for the United States against England is a draw, then a win against Wales is a necessity. Not only that, but history doesn’t bode well for teams that lose their group stage opener. Both teams will be looking for three points.