Napoli, which hosted Lazio at home in the 15th week match of Serie A, lost the leadership to Atalanta by losing 1-0 to its opponent. Isaksen scored the only goal that gave Lazio the victory in the 79th minute.
The two teams competed against each other in the Italian Cup 4 days ago, and Lazio was the winner in that match with a score of 3-1.
After the defeat against Lazio, Napoli remained in the 2nd place with 32 points, 2 points behind the leader Atalanta.
With this win, Lazio increased its points to 31 and rose to 5th place.