Barcelona defeated Atletico Madrid 4-2 at Camp Nou on Sunday, with Dani Alves scoring before receiving a straight red card.
The two teams entered this match in fifth and fourth place in LaLiga, respectively, with Atletico just one point ahead in the final Champions League spot.
And it was Diego Simeone's side who seized the lead on eight minutes, as Yannick Carrasco scored off a feed from Luis Suarez.
Jordi Alba volleyed home from Alves' cross across the box to bring Barca level just two minutes later and in style.
On 21 minutes, Xavi's side seized the lead, with AdamaTraore, making his second Barca appearance after joining from Wolverhampton Wanderers in January, pivotal as he sped past Atletico defender Mario Hermoso before setting up Gavi to head the ball past Jan Oblak.
Barca took a 3-0 lead two minutes before halftime when Ronald Araujo tapped in from close range after Ferran Torres had headed Alves' free-kick against the bar.
On 49 minutes, Alves made it four for Barcelona as he hammered the ball home from inside the box for his first goal since rejoining the club.
However, Luis Suarez equalised for Atletico Madrid on 58 minutes with a close-range header, although he did not celebrate after scoring against his former team.
On 58 minutes, Alves was issued his marching orders when he scraped his studs down Carrasco's calf. Before pulling out the red card, referee Jesus Gil Manzano cast a quick peek at the VAR monitor.
On 61 minutes, Xavi replaced Traore with Pierre-EmerickAubameyang, who received an euphoric reception from the Camp Nou crowd. OusmaneDembele, who was an unused substitute, was booed by the home fans when his name was read out before kick-off.