Antonio Conte has installed a 3 - 4 - 3 system this season .
Alonso has proved an important player at left wing - back , helping the Blues win 15 of the 17 Premier League games he 's appeared in .
Antonio Conte has installed a 3 - 4 - 3 system this season and Alonso has proved an important player at left wing - back , helping the Blues win 15 of the 17 Premier League games he 's appeared in .