Romelu Lukaku’s goal allowed Belgium to become the first European nation to clinch qualification for the 2018 World Cup on Sunday.
Manchester United striker Lukaku headed in a Thomas Meunier cross in the 74th minute in Piraeus for the decisive goal in a 2-1 Belgium win that guaranteed them top spot in European qualifying Group H.
All the goals came in a frantic five-minute spell, with a low drive by Tottenham Hotspur defender Jan Vertonghen putting Roberto Martinez’s side ahead in the 70th minute.
Portuguese-born midfielder Zeca equalised for Greece only for Lukaku to grab the decisive goal — his 10th in seven qualifiers — a minute later.
With just two matches remaining, Belgium enjoy an unassailable eight-point lead over second-placed Bosnia and Herzegovina, for whom Edin Dzeko netted twice in a 4-0 win over Gibraltar.
Belgium join Brazil, Iran, Japan, Mexico and hosts Russia in guaranteeing a place at next year’s finals.
In the battle for second place and a spot in November’s two-legged play-offs, Bosnia are now a point ahead of Greece and four clear of Cyprus, beaten 1-0 in Estonia.
Meanwhile, the Netherlands boosted their hopes of making it to the finals with a 3-1 win over Bulgaria in Amsterdam.
Davy Propper scored twice either side of an Arjen Robben effort as the Dutch climbed above Bulgaria into third, three points behind Sweden who visit Amsterdam next month.
In Group B Switzerland are still on top after making it eight wins from eight with a 3-0 victory in Latvia with Haris Seferovic and Blerim Dzemaili scoring before Ricardo Rodriguez netted a penalty.
European champions Portugal are still three points behind the Swiss in second following a 1-0 victory against 10-man Hungary in Budapest as the AC Milan striker Andre Silva netted the only goal.
Portugal still harbour hopes of winning the group and qualifying automatically as Cristiano Ronaldo’s side host Switzerland in Lisbon in October.
Also on Sunday, Domagoj Vida’s goal gave Croatia a crucial 1-0 victory over Kosovo in a match that had been stopped on Saturday due to heavy rain in Zagreb.
The Group I encounter resumed in the 21st minute on Sunday with Vida scoring 16 minutes from the end. The win took Croatia back above Ukraine to the top of the table.