Centre back: Cesar Azpilicueta
Azpilicueta has seen a change in his position after Conte arrived and the Spaniard has adjusted well to the demands of being a centre back. Though his role has been lessened as being a fullback involves more running and attacking output whereas Azpilicueta has been stationed at the back this season. He covers the ground well remarkably to shield the defence and is a major reason of Chelsea doing so well defensively this season.
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Centre back: Nicolas Otamendi
Otamendi has seen his importance rise under Guardiola as the long term injury to Vincent Kompany resulted in him being the most senior centre back in the squad. He is playing with his ball playing partner in John Stones and has been a calming influence on the youngster. The Argentine is a big match winner as he kept the threat of Zlatan Ibrahimovic really well when the two sides had met. He will have a similar job against Diego Costa on Saturday and will look to improve his season with a resolute showing against the league leaders.
Centre back: David Luiz
Chelsea's deadline day signing was deemed as a panic buy many but the Brazilian in his second stint with the Blues has proved his importance to this Chelsea side. Conte's change to 3-4-3 has benefited him as his ball playing abilities coupled with this strong tackles have seen him establish as one of the first names on the team sheet. Stones misses out with Luiz playing consistently well week in week out with the young Englishman committing few errors on the way.
Left wingback: Marcos Alonso
The former Bolton defender was one of the best players in October as his role on the left flank often goes unnoticed. Alonso also has formed a solid partnership with Eden Hazard on the left wing and his output in the final third has been useful to Chelsea in their rise to the top after 13 games.
Gael Clichy and Aleksandr Kolarov have struggled as Alonso beats City's fullbacks hands down.
Right fullback: Victor Moses
Moses' rise at Chelsea can be said as Conte's first success story of his tenure. After a string of loan spells, the Nigerian found his place playing as a right fullback and has given the role full justice.
The likes of Pablo Zabaleta and Bacary Sagna have played decently but Moses has been one of Chelsea's best players and his hard-work has resulted in him winning the player of the month award last month.
