5 things we learned in La Liga this weekend

Madrid - Barcelona and Real Madrid made it two wins from two, but both were thoroughly tested and trail surprise early leader Las Palmas, whilst Atletico Madrid's title hopes continue to disintegrate already.

Here are five things we learned from week two in La Liga:

Atletico's title challenge over before it began?

Writing off Diego Simeone's men after just two games may seem harsh, but in a league where 90 points have been needed to win the title for the past six seasons, back-to-back draws to open the campaign leaves Atletico already facing a mountain to climb.

Moreover, those four dropped points have come against newly-promoted Alaves and Leganes, leaving star forward Antoine Griezmann to conclude: "If we keep playing like this we will be fighting relegation."

Having held onto Griezmann and enjoyed a summer without selling one of its best players for the first time in the Simeone era, last season's Champions League finalist was expected to pose a serious challenge to Barca and Real for the title.

However, a familiar problem of breaking down, in theory, weaker opposition has blighted Atletico's prospects. After such a slow start, targeting a first ever Champions League win and consolidating its status as Spanish football's third force seems more realistic.

Barca's unpredictability makes Catalans dangerous

Stopping Lionel Messi, Luis Suarez and Neymar has been an almost impossible task as Barca has won back-to-back Liga and Copa del Rey doubles.

However, with Neymar still absent after winning Olympic gold with Brazil and Messi and Suarez rarely off-form, Barca still picked up a vital 1-0 win at Athletic Bilbao thanks to Ivan Rakitic's winner.

Rakitic and Denis Suarez constantly looked to run behind the Athletic defence, adding an extra dimension to Barca's already lethal attack. Moreover, the Croatian's goal was a bullet header at the end of a flowing counter-attack.

With such variety, Barca may be even harder to stop with the likes of Neymar and Andres Iniesta still to feature in La Liga this season.

Real Madrid still needs Ronaldo after all

Gareth Bale's sensational form in 2016, including a double as Madrid routed Real Sociedad 3-0 last weekend, suggested the European champion's dependence on Cristiano Ronaldo was easing.

However, with the Portuguese still sidelined by the knee injury that forced him off in the Euro 2016 final, a disjointed Real struggled for long periods before Toni Kroos' late winner sealed a 2-1 win over Celta Vigo.

Bale in particular looked jaded by his long summer with Wales at the Euros and the searing Madrid heat on Saturday night in the kind of game in which Ronaldo so often comes to Real's rescue.

Boateng having a party in Las Palmas

Forget Madrid and Barca, Las Palmas is the early-season entertainer, thrashing Granada 5-1 this weekend to go top of the table.

Kevin-Prince Boateng's move to the Canary Islands was one of the more eye-catching La Liga transfers over the summer and the Ghanaian has so far lived up to the hype with a second stunning goal in as many games before limping off to a standing ovation.

Boateng also took time to pay homage to the nearly 300 victims of an earthquake in central Italy this week having spent three years at AC Milan.

Valencia crisis deepens

It seemed impossible for things to get any worse for Valencia after a three-coach season in which Los Che flirted with relegation. Yet, the club could end up in another battle to survive after taking zero points from its opening two games.

A 1-0 defeat at Eibar followed a 4-2 humbling by Las Palmas at home last Monday, and more bad news is set to come with the imminent sale of captain Paco Alcacer to Barcelona.