Barcelona are big fans of a 'remontada' or what the English refer to as a comeback.
The Blaugrana's greatest ever 'remontada' came back in 2016 against Paris Saint-Germain, a second-leg game they went into 4-0 down.
Somehow, with a supernatural performance from Neymar, Barca beat the Ligue 1 side 6-1 at the Camp Nou to seal the Champions League's greatest ever comeback.
With their knack for a comeback in mind, no football fan was going to write off Barca as they went into their Copa Del Rey quarter-final second leg against Sevilla.
Ernesto Valverde's side lost the first game 2-0, with Lionel Messi and Luis Suarez both controversially rested.
However, in the home leg the Barca boss recalled the big hitters and it paid dividends as the Blaugrana won 6-1 - repeating their miraculous feat against PSG
Philippe Coutinho scored twice after Messi handed him a penalty in the first-half, with the Argentine, Suarez, Ivan Rakitic and Sergio Roberto grabbing the other goals.
And the game will forever be remembered for a piece of artistry by Brazilian midfielder Arthur Melo, who produced the most sumptuous of assists for Rakitic to score the second goal.
You can watch the 22-year-old's moment of magic below.
That really is outrageous.
Has a pass from a different player ever looked more like the legendary Xavi Hernandez? Probably not.
As Barca fans were quick to point out after, Arthur's pass actually eliminated eight players.
Absolute brilliance from a player who looks certain to reach the very top.
Barca look well on course to challenge for yet another treble in 2018/19.
They're five points clear at the top of La Liga, with their key players hitting form ahead of the return of the Champions League.
The Blaugrana will face Ligue 1 side Lyon and will be the heavy favourites to progress.
And their chances will be boosted further if Arthur keeps on doing impressions of Xavi.