Napoli won 4-1 with Mertens' stunner being the highlight.
"I saw the ball there and I thought of the shot. I am very happy with this goal, but the most important thing was to win the game,” he said.
It has been noted that Diego Armando Maradona scored a similar strike for Napoli in 1985.
“Mine was further out than Maradona, so I get extra credit! I turned around, saw the goalkeeper was getting slowly back to his line and there was a little gap, so I said to myself: go for it!
“Honestly, it’s thanks to my teammates if I am able to score goals like this. I am not Leo Messi, I’m not Maradona, I’m just Dries and I’m happy with that.”