5 clubs to go an entire season unbeaten in Europe's top five leagues 

#5 Juventus (2011-2012) - Serie A

Juventus won the first of their eight consecutive Scudetti in an unbeaten campaign

Juventus are on a run of having won the last eight consecutive Scudetti but it was not always so easy for the Turin giants.

Following their relegation in 2006 due to the Calciopolli scandal, Juventus found it difficult to reassert themselves in the upper echelons of Italian football and spent the rest of the decade in the shadows of the Milan clubs.

They had finished 7th at the end of the 2011 campaign, 24 points behind champions AC Milan and even the most optimistic fan would have settled for a top four finish.

However, the newly appointed Antonio Conte had different ideas and the signing of the legendary Andrea Pirlo on a free transfer from AC Milan proved to be a masterstroke, as he played a major role in helping the Bianconerri dethrone his former team.

Juventus matched the feat of the Rossonerri from two decades earlier by finishing the Serie A campaign undefeated, winning 23 and drawing 15 of their 38 league games and this proved to be the start of the most successful period in their modern history.