Napoli's Lorenzo Insigne celebrates his goal with head coach Carlo Ancelotti during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Arkadiusz Milik (L) celebrates his goal during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Simone Verdi scores his goal during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's players celebrate at the end of the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Lorenzo Insigne (R) scores his goal during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Mario Rui (R) vies with Sampdoria's Bartosz Bereszynski during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Piotr Zielinski (R) vies with Sampdoria's Bartosz Bereszynski during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Nikola Maksimovic (R) vies with Sampdoria's Gaston Ramirez during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)

Napoli's Kalidou Koulibaly (R) vies with Sampdoria's Gaston Ramirez during the Italian Serie A soccer match between Napoli and Sampdoria in Napoli, Italy, Feb. 2 , 2019. (Xinhua/Alberto Lingria)