The Champions League is the greatest club competition there is.
Each year, the best players and teams in the world go head-to-head in a bid to lift the famous Big Ears trophy.
Real Madrid are the most successful team in the competition's history thanks to their 13 triumphs.
AC Milan boast the second-best record with seven, with Liverpool looking to equal that total this year.
Given that the Champions League is the most popular form of club football, a lot of you will be pretty clued up when it comes to stats and trivia.
But how much do you know about the competition's all-time records? Well, we've put a tough 20 question quiz together that will really put the knowledge you've collected down the years to the test.
All the questions are based on records set from the 1992/93 season onwards, when the competition was officially rebranded.
MONTE CARLO, MONACO - AUGUST 28: A general view of the UEFA Champions League trophy at the UEFA Champions League Draw for the 2008/2009 season at the Grimaldi Center on August 28, 2008 in Monte Carlo, Monaco. (Photo by Denis Doyle/Getty Images)
Here's our scoring system...
0-4: Are you sure you know what the Champions League is?
5-9: Eliminated at the group stage
10-14: Nice little journey to the quarter-finals
15-19: You can be proud of your European run
20: Like Cristiano Ronaldo, you're the King of the Champions League!
Ready? Right, let's go!