Five points separated Barcelona and Atletico Madrid in the Spanish La Liga table before this game. That gap is now 8 points after Ernesto Valverde's side won 1-0 at the Camp Nou thanks to a Lionel Messi masterpiece of a free-kick. Barcelona are still undefeated in the league with 11 games to go.
The Argentine forward's first-half goal was the 600th goal of his career for club and country. He has now scored 539 goals for Barcelona and and 61 for Argentina. He has also reached the 600-mark faster than Cristiano Ronaldo (857 games).
Here's how Twitter reacted to the game - especially Messi's landmark goal.
Meanwhile, Andres Iniesta's injury may be a worry for Barcelona fans - and maybe Spain fans too - ahead of the 2018 World Cup.