Lionel Messi reached 644 goals for Barcelona against Valladolid, breaking Pele's record with Santos into the bargain.
In the modern game it's difficult to envisage another player reaching this total for a single team, but Messi's 15 years at Barcelona have been unilaterally successful.
We've also witnessed the diminutive Argentine produced moment after moment that simply defies logic, not least in beating the goalkeeper.
So as part of FC's Great Goals Project, we've attempted to rank Messi's greatest strikes - including those for Argentina - and provide a list of the top 50.
But how do you categorise Great Goals?
Click HERE for Lionel Messi's 50 Greatest Goals Ever
The Great Goals Project is our attempt to catalogue, analyse, and rank every high-quality goal scored in various competitions or by famous players. We rank goals based across a number of specific categories in order to establish the difference between the very good, the great, and the greatest.
We have watched every goal ever scored by Lionel Messi and attempted to rank them, using a number of key factors.
By clicking through to each goal's individual page, not only can you watch a video of said goal, but you can see in more detail how we calculated each rating.
We categorise goals based on a number of factors which determine which goals we deem to be the best.
1. Aesthetically Pleasing: How enjoyable was the goal to watch?
2. Technical Difficulty: How hard is it for a professional player to score a goal like this?
3. Uniqueness: Has this goal been seen many times before, or is it one-of-a-kind?
4. Importance: Was the effort the fifth in a 5-0 win, or the winner in the Champions League final?
5. Standard of Opposition: How good was the team that the goal was scored against?
So enjoy a run through Messi's greatest moments and feel free to let us know on Twitter what you think of our selections, at @CriticFootball_
Lionel Messi 
Barcelona 
Man Utd 
Arsenal 
Real Madrid 
Liverpool 
Tottenham 
Man City 
Everton 
Chelsea 
