Robert Lewandowski's successful penalty was "one of the heaviest" of his life as he helped Poland book their place in the World Cup finals.

The skipper was on target as the Poles beat Sweden 2-0 in the playoff final to seal their spot in Qatar.

Lewandowski broke the deadlock four minutes into the second half in Chorzow after Jesper Karlstrom fouled Grzegorz Krychowiak in the box.

Piotr Zielinski sealed the deal when he slotted past Robin Olsen 18 minutes from time to secure the Eagles' ninth appearance in the finals.

Lewandowski led the wild post-match celebrations at the Silesian Stadium, but the Bayern Munich forward admitted he felt the pressure when he stepped up for the decisive spot-kick.

He told TVP Sport: "It was a special match; we knew what we were playing for. It is known that this situation around was an additional burden, but in our stadium, it was easier. 

"After the goal, it was clear that the Swedes had a desire. We played well defensively. There is potential to create even more situations, but let's appreciate this qualification and mentally prepare for the World Cup.

"It was one of the heaviest penalties of my life. I was aware of the pressure. I wanted to focus on the execution, but I knew what the game was about. 

"There was great euphoria after the penalty, because I knew it would be a key step [towards qualification]. Then, [Zielinski] scored a goal, and it worked out."