The five longest unbeaten runs in Europe’s top five leagues: 

5. Liverpool – 44 games – 2019-20

One year, one month and 27 days. That’s how long Liverpool went between defeats in the Premier League, going on the second-longest streak in English football history.

The last time they lost in the league came against Manchester City in January 2019

3. Juventus – 49 games – 2011-12

Just six years after being demoted to the Serie B over the Calciopoli match-fixing scandal, Juventus were champions once more in 2012 after going an entire season undefeated.

It was an extraordinary turnaround for the Bianconeri, who had finished seventh two seasons in a row and had been unceremoniously dumped out of the Europa League by Fulham in 2010. 

3. Arsenal – 49 games – 2003-04

The Premier League standard bearers when it comes to undefeated streaks, Arsenal became only the second team in English football history to go an entire league season without losing a match.

The Invincibles’ run went beyond just a season though, refusing to lose for a whopping 49 games. 

2. Bayern Munich – 53 games – 2012-14

One of the most impressive Bayern Munich teams of all-time, the Bavarian outfit’s run of games without defeat lasted almost two years and was overseen by two different managers.

Jupp Heynckes was in charge when the German club began to reclaim authority over Jurgen Klopp’s high-flying Borussia Dortmund, winning the Champions League final against Die Schwarzgelben in the process, before Pep Guardiola took over and continued their dominance in the Bundesliga.

1. AC Milan – 58 games – 1991-93

The most invincible of all the invincibles, AC Milan were the strongest Italian team of the early nineties in a league that was arguably at its strongest point ever, and most certainly the best league in the world at the time.

With a squad built by Arrigo Sacchi and taken over by Fabio Capello, the Rossoneri possessed legendary players such as Franco Baresi, Paolo Maldini, Frank Rijkaard, Marco van Basten, Alessandro Costacurta and Carlo Ancelotti.

They went the entire 1991/92 season unbeaten, winning 22 and drawing 12 of their 34 matches, before going on to lose just twice in the following campaign against Juventus and Parma.