Hosts Qatar have been pushed to the brink of early elimination from their World Cup after losing 3-1 to Senegal on Friday.
Goals from Boulay Dia and Famara Didiou put Senegal ahead at the end of the first half.
Senegalese substitute Bamba Dieng scored six minutes later and the result was beyond doubt, putting the African champions back into Group A contention after a 2-0 defeat to the Netherlands.
The loss left bottom-placed Qatar sweating their results elsewhere as they are the only two-time World Cup host to surrender after the first round, following South Africa in 2010.
Their elimination is confirmed if Ecuador fails to beat the Netherlands later in the day, making Qatar the first player to host a World Cup after two games.
Qatar got off to a tense start with a 2-0 loss to Ecuador.
The Asian champions dropped goalkeeper Saad al-Seeb to the bench after a shaky performance in the opening match.
His replacement, Meshal Barsham, fluttered in Senegal’s corner to open the scoring and didn’t inspire much confidence early on.
Ismaila Sarr and Nampalys Mendy had by then missed chances for Senegal to score, while Idrissa Gana Gueye and Youssouf Sabaly had the first half wasted.
Qatar is almost out
Qatar spent most of the opening 45 minutes on their hind legs, but saw Akram Afif furious and denied a penalty after being restrained by Sarr.
Senegal looked set to head into halftime after failing to break through Qatari resistance, only for the hosts to concede a goal in the 41st minute.
Qatar defender Boualem Koukhi fluffed a clearance and left Dia to pounce on a loose ball and let Barsham through.
Senegal doubled their lead shortly after half-time when Didiou headed in at the near post from a corner.
Qatar started showing offensive ambitions after conceding two goals and Afif was involved in everything.
After Almoez Ali saved Senegalese goalkeeper Eduardo Mendy with a finger tip, the Chelsea man again saved Africa from an Isamir Mohammad shot.
Mendy rooted at his line as Muntari scored one back for Qatar and headed Mohammad’s cross with force to pull the hosts back.
The goal lifted the crowd and Qatar pushed forward for the next goal, but Dién nipped the bud of a comeback in the 84th minute by sweeping the ball home for Senegal’s third.
Abdelkarim Hassan threw a free-kick, but Qatar tried to fight back, but Senegal held on and secured the victory.