Teenager Ansu Fati scored his fifth La Liga goal of the season as Barcelona extended their lead at the top with victory over Leganes.
The Guinea-Bissau forward produced a clinical finish at an empty Nou Camp before Lionel Messi doubled the lead from the penalty spot.
Messi’s 699th goal for club and country came after the Argentina forward was fouled by Ruben Perez.
However, Real will cut the lead to two points if they beat Valencia at home on Thursday.
At 16 years and 298 days, Fati became the second-youngest first-team player in Barcelona history when he made his debut in a 5-2 Walloping of Real Betis in August.
The exciting youngster who joined the club’s youth set up in 2012 produced a composed finish to put Barca in control before Messi doubled the lead in the first match played at the Nou Camp since La Liga resumed after it was suspended due to the coronavirus pandemic.
Leganes are bottom of the table, three points from safety with nine games left.