Barcelona put ground between them and Granada thanks to the Messi-Griezmann connection, which served for the Argentine to score a great goal with a trademark strike from just inside the box.
Messi scored again at the Nuevo Los Cármenes and did so after a good passage of play from Koeman's men, carried out by Griezmann and finished by the Argentine star.
Barcelona were far superior to Granada in the first half. Messi gave Barca breathing space thanks to a lifted shot from the edge of the box.
After a monumental brace at San Mamés, Messi scored again and understood Griezmann perfectly, who had previously made it 0-1.