Sevilla and Barcelona will go head to head at the Estadio Sanchez Pizjuanthis Wednesday night in the first leg of their Copa del Rey semi-final tie, a match between the two favourites remaining in the tournament.
This game could go a long way to determining who wins the competition, but there's even more than this year's Copa del Rey title at stake.
This is a test of two quite different sporting projects, with Barcelona looking to win what Ronald Koeman has described as their best chance of a trophy and with Sevilla looking to build on the Europa League triumph secured in Julen Lopetegui's first season as coach.
It won't be easy for Barcelona since they're missing so many players, with Sergino Dest, Ronald Araujo, Gerard Pique, Sergi Roberto, Philippe Coutinho, Ansu Fati, Miralem Pjanic and Martin Braithwaite all injured.
Yet they still have Lionel Messi and he should be extra fresh, after he didn't come on until the second half of their LaLiga Santander win over Real Betis on Sunday.
Sevilla, meanwhile, are without Lucas Ocampos after the injury he suffered on Saturday night, while full-backs Marcos Acuna and Jesus Navas are absent with physical issues too. Papu Gomez could be set to start in Ocampos' place if Lopetegui looks to have more control.
A history of Copa clashes
These two sides have met in this competition several times over the past few years. The most recent was in the 2018/19 quarter-finals, when Sevilla won the first leg 2-0, only to be thrashed 6-1 at the Camp Nou.
They also met in the 2016 and 2018 finals, with the Blaugrana winning 2-0 after extra time at the Estadio Vicente Calderon in 2016 and then producing an even more convincing 5-0 win at the Estadio Wanda Metropolitano in the next final.
Sevilla Copa del Rey form: WWWW
Sevilla form (all competitions): WWWWWW
Barcelona Copa del Rey form: WWW
Barcelona form (all competitions): WWWWWW
Sevilla possible starting lineup:
Bounou; Navas, Kounde, Carlos, Rekik; Jordan, Fernando, Rakitic; Suso, En-Nesyri, Ocampos
Barcelona possible starting lineup:
Ter Stegen; Dest, Mingueza, Lenglet, Alba; Busquets, De Jong, Pedri; Dembele, Griezmann, Messi
Source: Marca and Sports Mole