The Maurizio Sarri era at Chelsea could not have started any better.Bournemouth were the latest side to feel the wrath of 'Sarri-ball' with the Blues beating Eddie Howe's side 2-0 at Stamford Bridge.Chelsea have now won their first four games of the season and are level on points with Liverpool at the top of the table.Eden Hazard was magical against the Cherries, scoring his second goal of the campaign late in the second-half.Keeping hold of the Belgian in the summer was the biggest thing for the Blues and it's exciting to see him operating under an attack-minded manager.Antonio Conte's tactics often suffocated Hazard.The left-hand side of Chelsea's attack has looked so potent in 2018/19, with Marcos Alonso starting the season on fire.He provided the assist for Hazard's goal and was a constant threat going forward, hitting the post in the first-half.And after the game, the Belgian revealed what he's told Alonso about the other side of his game - defending.

Speaking on the pitch after the final-whistle, Hazard said: "Sometimes, [he] is in front of me. I said to him once, 'Marcos, I think your first target is to defend, because you play left back', but this guy don't want to listen, he just wants to score goals."

Alonso's goal-scoring ability since arriving from Fiorentina has been pretty spectacular.

When Conte put him into the team and changed to 3-5-2 in 2016/17, it was the catalyst for a title challenge.

However, there is an argument that his attacking prowess in a 4-3-3 formation could cost Chelsea against the bigger teams.

Alonso has less defensive cover these days and teams like Manchester City or Liverpool could catch the Spaniard out if he leaves space behind him.

For the moment, though, Chelsea are thriving with his playing style, but it could also prove detrimental in the latter stages of the season.