#4 Lionel Messi

Modern football fans, or least those who started watching the beautiful game at the start of the decade, will surely not carry regrets about not being able to watch the likes of Zidane, Beckham, Ronaldo and many other luminaries. Lionel Messi has made sure they feel blessed instead of unlucky.
The Barcelona hitman's long-lasting relationship with the goal net seems to be lasting till Doomsday. His habit of dispatching the ball into the net has revolutionised the art of scoring goals. Moreover, it's the perceptions of the fan base that he has changed.
A 40+ goal season before Leo Messi was born used to leave people awestruck. Ever since he started playing football, even a 50+ goal tally in a single season seems as normal as a 30-goal season. He has raised bars that will definitely be no piece of cake to even match, let alone surpass them.
Apart from his goalscoring exploits, Lionel Messi has also been credited for his flawless execution of the false 9 tactic. Pretty much, if it wasn't for his failures at the international stage, the Argentine magician would already have usurped the title of GOAT from Pele.