Atletico Madrid have a chance to take advantage of a topsy-turvy La Liga campaign when they host champions Barcelona on Saturday with the chance to take top spot this weekend despite their own patchy form.
Diego Simeone's side are just a point behind leaders Barca despite having drawn five times and lost once, together as many matches as they have won. They are battling to overtake Barca alongside Sevilla and surprise package Alaves, who are both level on 23 points with Atletico.
Alaves, promoted in 2016, finished 14th last term but will go top if they win away at Leganes on Friday night, while Sevilla could potentially be leaders on Sunday night despite languishing in 13th place in September.
Even Real Madrid are in touch, just four points back despite having gone more than eight hours without a goal at one point and having been without a permanent coach for two weeks before Santiago Solari was upgraded from interim to full-time boss.
Atletico may have put a miserable start behind them but last month, they suffered their heaviest defeat under Diego Simeone, a 4-0 loss to Borussia Dortmund. Before the international break, they needed two goals in the last 10 minutes to beat Athletic Bilbao.
The last time Atleti prevailed over Barca in the league was 2010, when they had Spain keeper David de Gea in goal and Argentina striker Sergio Aguero up front.
Lionel Messi proved the difference in March with a bending free-kick, and in the summer too for Antoine Griezmann, who decided he would be better off in the lead role he holds with Atletico rather than playing second fiddle at Barca.
There will be a battle of old against new in midfield, where Sergio Busquets, 30, goes up against Rodri Hernandez, eight years his junior.
Any result at the Wanda Metropolitano will benefit sixth-placed Real Madrid, whose first game with Santiago Solari as their permanent coach comes at Eibar early Saturday afternoon.
Four wins, 15 goals scored and only two conceded point to nothing less than a transformation, which gave Madrid president Florentino Perez an easy solution to fill the vacancy left open by the sacking of Julen Lopetegui.
Solari has a kind run of fixtures until Christmas, broken only by a league clash against Valencia and Roma in the Champions League next week, which gives his side the chance to re-emerge as serious challengers to Barca's crown.