When a Chelsea fan fondly reminisces back to the simpler times for Chelsea in 2005 where everything they did turned to gold under Jose Mourinho, one fact that remains in the the club's history is linked to the defenders.
To concede just 15 goals in a 38-game Premier League season is something that will simply never be repeated. It requires discipline, quality and most importantly, Jose Mourinho.
In that season, the back five were at the front of the queue when it came to handing out praise. That back five consisted of Petr Cech, Ricardo Carvalho, John Terry, Ashley Cole and Paulo Ferreira. Eight years later, four of the five still remain at Stamford Bridge.
Many defenders have come through to Chelsea and passed through the exit doors: Alex, Jose Bosingwa, Jeffrey Bruma (on loan) and Slobodan Rajkovic.
Yet, Chelsea's defence has been called into question in recent years as their strength and depth has decreased, and the stability at the club has become non-existent.
Being objective, nine managers in as many years is likely to destabilize the tactics the defence have to work on, with Andre Villas-Boas opting for a high defensive line during his short stint as Chelsea manager, while predecessors Guus Hiddink and Mourinho led with a more deep and organised approach.
The Blues boast one of the best defensive records in the league, but how exactly have their defenders fared this season?