Mertens whipped the ball into the top corner from range in Napoli's 3-2 win over Empoli, which goalkeeper Lukasz Skorupski got a hand to – but such was the power of the shot that the ball still ended up in the back of the net.
The strike put Napoli 2-0 up after 24 minutes following Lorenzo Insigne's goal shortly before.
The 30-year-old, who moved to Naples from Ajax in 2013, missed a penalty in the opening stages of a match where Napoli were 3-0 up at half-time. It's fair to say he attoned.
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