Barcelona thrashed 10-man Real Betis 4-0 on Saturday to move a step closer to winning La Liga for the first time since 2019.
Andreas Christensen, Robert Lewandowski and Raphinha struck for the hosts at Camp Nou with Guido Rodriguez netting a late own goal to round off the rout.
Edgar Gonzalez's early dismissal made it an easy night for Xavi Hernandez's side, who restored their 11-point lead with six games remaining after second place Real Madrid had thrashed Almeria 4-2 to cut the gap.
With his side comfortably winning, Xavi brought on 15-year-old forward Lamine Yamal to become the club's youngest ever player to debut in La Liga.
Betis also brought on veteran Joaquin Sanchez, 41, for his final appearance at Camp Nou before he retires at the end of the season, and he was afforded a standing ovation by Barcelona supporters.