Napoli won a free kick four minutes later .
Insigne stepped up to curl the ball past Skorupski to give the hosts a 37th minute lead , taking his own personal tally in the league to 10 .
Napoli won a free kick four minutes later and Insigne stepped up to curl the ball past Skorupski to give the hosts a 37th minute lead , taking his own personal tally in the league to 10 .