Luis Suarez and Leo Messi run riot as Barca start with a bang – in pictures

Barcelona’s Sergi Roberto and Real Betis’ Felipe Gutierrez in action during their La Liga match at the Camp Nou, Barcelona, Spain, August 20 2016. Albert Gea / Reuters

Barcelona’s Andres Iniesta, right, and Lionel Messi raise up the La Liga trophy for the 2015/16 season, prior to the La Liga match between FC Barcelona and Betis at the Camp Nou in Barcelona, Spain, Saturday, August 20, 2016. Manu Fernandez / AP Photo

Barcelona’s Arda Turan tries to score against Real Betis’s goalkeeper Antonio Adan during their La Liga match at the Camp Nou, Barcelona, Spain, August 20 2016. Albert Gea / Reuters

Barcelona’s players celebrate after Arda Turan scored the first goal during the La Liga match against Real Betis at Camp Nou in Barcelona, northeastern Spain, 20 August 2016. Toni Albir / EPA

Lionel Messi of Barcelona celebrates after scoring his team’s second goal during the La Liga match between FC Barcelona and Real Betis at Camp Nou on August 20, 2016 in Barcelona, Spain. Alex Caparros / Getty Images

Barcelona’s Luis Suarez celebrates a goal against Real Betis during their La Liga match at the Camp Nou, Barcelona, Spain, August 20 2016. Albert Gea / Reuters

Barcelona striker Luis Suarez celebrates after scoring his second goal, the team’s fourth goal, against Real Betis during their La Liga match at Camp Nou in Barcelona, northeastern Spain, 20 August 2016. Quique Garcia / EPA

Barcelona striker Lionel Messi celebrates after scoring the team’s fifth goal against Real Betis during their La Liga match at Camp Nou in Barcelona, northeastern Spain, 20 August 2016. Quique Garcia / EPA

Barcelona’s Luis Suarez celebrates a goal against Real Betis during their La Liga match at the Camp Nou, Barcelona, Spain, August 20 2016. Albert Gea / Reuters

Barcelona striker Luis Suarez takes the ball after scoring three goals against Real Betis in their La Liga match at Camp Nou in Barcelona, northeastern Spain, 20 August 2016. Toni Albir / EPA

Barcelona’s Lionel Messi (C) celebrates with teammates Luis Suarez (L) and Arda Turan (R) during their La Liga victory at Camp Nou in Barcelona, northeastern Spain, 20 August 2016. Quique Garcia / EPA

Images from Barcelona's 6-2 win over Real Betis in La Liga on Saturday night, as Luis Suarez scored a hat-trick and Lionel Messi added a double for a big win in Barca's first match of the new league campaign.

• Andy Mitten: Luis Suarez and Lionel Messi share the limelight, but Sergi Roberto subtly emerges as a key