- Poland swept aside Armenia with Robert Lewandowski scoring a hat-trick
- Bayern Munich striker scored twice in first-half to eclipse Wlodzimierz Lubanski
- Lewandowski has now scored 50 goals for his country in 90 senior appearances
- Group E leaders swept aside Armenia with three goals in the opening 25 minutes
Robert Lewandowski became Poland's all-time leading scorer with 50 goals after netting a hat-trick in their World Cup qualifier in Armenia on Thursday.
Lewandowski has now scored 24 goals in his last 14 qualifiers for Poland, with The Eagles producing the complete performance to strengthen their grip on top spot in Group E.
Poland have 22 points from nine matches and need one more at home to Montenegro on Sunday to clinch their place in Russia.
They could qualify later on Thursday if Montenegro and Denmark, level on 16 points from eight games, draw their match in Podgorica.
Hull winger Kamil Grosicki scored the opener at the Hanrapetakan Stadium in Yerevan with a near-post finish from Lukasz Piszczek's cross to get the ball rolling, before Lewandowski took charge, scoring twice.
The striker, making his 90th appearance, doubled their lead after 18 minutes when he curled a free kick over the wall and into the top corner after a foul on Piotr Zielinski.
Seven minutes later, Poland were gifted an indirect free kick from eight metres after Armenia defender Taron Voskanyan passed the ball back to goalkeeper Grigor Meliksetyan who picked it up.
Grosicki rolled the ball to Lewandowski who drilled his shot through a wall of defenders on the line to overhaul Wlodzimierz Lubanski's record of 48 goals.
Hovhannes Hambardzumyan rose to head in from a corner and pull one back for Armenia six minutes before half-time.
But there was no stopping Poland and Jakub Blaszczykowski got on the scoresheet in the 57th minute, collecting the ball near the touchline before cutting inside and firing a low shot through Melitsetyan's fingers.
Lewandowski took advantage of poor marking to complete his hat-trick from close range seven minutes later before substitute Rafal Wolski completed the rout in the 89th minute, scoring after the home defence got into another tangle.
Armenia's seventh defeat in their ninth qualifying game leaves them only above Kazakhstan in the group while Poland can guarantee themselves a place at next year's World Cup finals with a victory over Montenegro on Sunday.