The Spanish champions remain at the head of Spain's top flight on goal difference from Real Madrid, while Alaves sit 14th with 19 points to show for their efforts during the first half of the 2019-20 campaign.
All things considered, Barca were a touch fortunate to pick up a point against Real Madrid on Wednesday night. The Spanish champions had some excellent chances to secure a vital win, but Los Blancos more than deserved a share of the spoils in the first Clasico of the 2019-20 campaign.
The goalless draw kept Ernesto Valverde's side top of the table on goal difference, meaning that a strong win on Saturday should be enough to see them finish 2019 and indeed enter 2020 at the top of the pile.
That said, Real Madrid could still move above Barca with a heavy win over Athletic Bilbao on Sunday evening, although a relatively hefty swing in terms of goal difference would need to occur for that to be the case.
The Catalan giants have actually already lost the same number of league matches this season (3) than they did in the entirety of last term. Eleven wins have kept them at the summit, though, and they are also comfortably the highest scorers in the division with 43 goals from their first 17 matches.
Barca have been victorious in their last five league meetings with Alaves, meanwhile, but the Basque side incredibly ran out 2-1 winners at Camp Nou in September 2016 on their return to Spain's top flight.
It is difficult to say that Alaves are inexperienced in La Liga when they have competed in 14 full seasons at this level, but the club were absent from Spain's top flight between the 2006-07 and 2015-16 campaigns.
El Glorioso are competing in their fourth straight La Liga season, though, and have finished ninth, 14th and 11th since earning promotion in 2015-16, impressing many with their performances along the way.
Asier Garitano's side are five points clear of the relegation zone heading into this weekend's clash, with a total of 19 points from 14 matches leaving them in 14th.
They won back-to-back matches against Real Valladolid and Eibar either side of the November international break but have collected just one point from their last three matches against Real Madrid, Granada and Leganes.
Alaves have two former Premier League strikers in good form this season, though, with Lucas Perez managing eight in 17 league outings while Joselu has struck seven times in his 16 La Liga appearances during the 2019-20 campaign.
Barcelona La Liga form: WWWWDD
Barcelona form (all competitions): WWWWWD
Alaves La Liga form: LWWLLD
Alaves form (all competitions): WWLLDL
Sergio Busquets was bizarrely pulled out of the starting XI against Real Madrid despite being named in the initial selection, with the midfielder dropping to the bench and ultimately not being used in El Clasico.
As for Alaves, experienced midfielder Tomas Pina is out with a fractured leg, but the Basque side have no fresh injury concerns ahead of the contest.
There will be changes from the team that started Tuesday's loss at Real Jaen in the Copa del Rey, though, with Joselu and Perez returning in attack.
Barcelona possible starting lineup:
Ter Stegen; Roberto, Pique, Lenglet, Alba; Busquets, Rakitic, De Jong; Griezmann, L Suarez, Messi
Alaves possible starting lineup:
Pacheco; Duarte, Ely, Navarro, Aguirregabiria; Vidal, Pons, Garcia, Rioja; Joselu, Perez
We say: Barcelona 2-0 Alaves
As mentioned above, Alaves know what it takes to pick up a win at Camp Nou, but it is difficult to predict anything other than a home victory this weekend. Valverde is likely to resist the temptation to make changes to ensure that the champions end 2019 with three important points.