The Blues attacker opened the scoring for Hansi Flick’s free-scoring German side with a clever left-footed finish, after getting in front of his man at the near post to meet a cross from the right.

Havertz could have scored within the first five minutes, but saw his effort cannon back off the post and away from danger.

The forward, playing in the most central role of an attacking three with Thomas Muller and Leroy Sane, was a constant threat to the Armenian defence and deserved his goal.

Ikay Gundogan scored twice for Germany – the first a penalty in first-half injury time and then the second five minutes after the break following a goalkeeper mistake.

Former Manchester United midfielder Henrikh Mkhitaryan pulled a goal back for the hosts from the penalty spot before Jonas Hofmann restored Germany’s three-goal lead with a neat finish five minutes later.

Germany had already booked their place at the 2022 World Cup and the three points keeps them top of their qualifying group. Havertz’s Chelsea team-mates Toni Rudiger (suspended) and Timo Werner (injured) missed Sunday’s victory.

Elsewhere, Cesar Azpilicueta started for Spain as they defeated Sweden 1-0 in Seville to book their place at next year's World Cup, thanks to a late winner from former Chelsea striker, Alvaro Morata.

Azpi lined up at right-back for La Roja and came through the entire game unscathed, putting in an accomplished performance as he helped his side to a clean sheet.

The victory, which came courtesy of Morata’s strike four minutes from time, books Spain’s place at the World Cup in Qatar and leaves them four points clear of second-placed Sweden.

Edouard Mendy was an unused substitute as Senegal defeated Congo 2-0 in a World Cup qualifier, to keep them comfortably at the top of their group.

Watford striker Ismaila Sarr notched both goals in Thies, with Congo rooted to the bottom of the group.

Staying in Africa, Baba Rahman played 90 minutes as Ghana secured a big three points against South Africa to leapfrog their opponents at the top of their World Cup qualifying group.

Andre Ayew netted the only goal of the game from the penalty spot in Cape Coast, with Baba playing his part with a number of key blocks as the Black Stars recorded a clean sheet in this impressive victory.