BARCELONA, Spain -- Luis Suarez scored a hat trick and Lionel Messi added two more goals as Barcelona made a superb start to its Spanish league title defence by routing Real Betis 6-2 on Saturday.

Suarez, who led scoring in La Liga with 40 goals last season, helped to put the result beyond doubt before halftime and struck twice afterward to complete the demolition.

Even better for the Catalan club, Messi destroyed any hopes of title rivals that a difficult summer could have affected his game.

Messi was found guilty in June of tax fraud in Spain -- he is appealing -- and lost another Copa America final with Argentina. But he was his normal brilliant self at Camp Nou.

With the score at 1-1, Messi restored Barcelona's lead for good in the 37th minute with his first of two unstoppable strikes from the edge of the area. He was just as impressive as a playmaker, taking part in setting up three more goals.

"(Messi) is incredible. He is the best player in the world," Suarez said. "You have to enjoy playing with a player like that."

Arda Turan had put Barcelona ahead before Real Betis striker Ruben Castro equalized with the first of two goals.

Barcelona's biggest title rivals play their opening matches on Sunday, when Real Madrid visits Real Sociedad and Atletico Madrid hosts the promoted Alaves.

For Suarez, the six-goal victory over Betis was a message that Barcelona is still the team to beat.

"Barca is always the favourite," Suarez said. "Today's game was to show why we have been the champion in recent seasons."

Before kickoff, Messi and Andres Iniesta received the trophy for last season's title.

After Iniesta, who is recovering from a leg injury, returned to the stands, Messi got down to helping Barcelona make its first step toward a third straight league crown.

Messi needed six minutes to catch Betis' defence off-balance with a cross-field pass to Jordi Alba, who then found Turan to sidefoot in his assist.

Turan continued to make the utmost of Neymar's Olympic venture for Brazil by scoring his third goal in as many matches. Turan scored twice to help win the Spanish Super Cup this week, and has meshed well with Messi and Suarez up front.

The other big benefactor of the lopsided win was Sergio Roberto. The versatile Roberto has been tapped to replace the big boots of Dani Alves on the right side of the defence. He excelled against Betis with passes for Messi and Suarez to score their first goals.

Castro pulled Betis level in the 21st with a free kick that goalkeeper Claudio Bravo, who is linked to a move to Manchester City, couldn't keep out. Castro also scored the last goal of the match.

But it didn't take long for Messi to quash Betis' comeback.

Messi had already struck the bar before getting his first goal, a trademark left-footed curler after he had received the ball from Roberto.

Suarez made it 3-1 just before halftime when Messi played Roberto clear on the right. The Uruguay striker rolled Roberto's pass off the far post and into the net.

Barcelona increased its dominance after halftime as Messi led a counterattack that ended with him finding Suarez all alone to push in the ball in the 55th.

Two minutes later Messi rifled a low strike past Adan, who then could do nothing to reach Suarez's free kick that sailed just inside the post in the 82nd.

Later, Villarreal visits Granada, while Sevilla hosts Espanyol.