BARCELONA RATINGS: Marc-Andre ter Stegen 7 - Quiet evening in a game which Barcelona dominated – though he roared when Kounde stopped a sure goal on 70 minutes – after Ter Stegen had made a save himself. A clean sheet and already looking better than last season with a better defence in front of him. EPA
Alejandro Balde 8 - Now appears to be the first choice left-back – and on tonight’s showing, justified. “Balde deserves to play,” said his boss Xavi. “I’m so happy for him. Physically he is very strong, he can dribble, he has great offensive ability, he helps us a lot, a spectacular boy.” Getty Images
Ronald Araujo 7 – Deployed as a central defender rather than right-back and a large roar went out when he won the ball from Valladolid striker Guardiola on 40 minutes. AP Photo
Eric Garcia 8 - Played central defender while the old (and expensive) guard of Pique and Alba sat on the bench. Very comfortable. AP Photo
Jules Kounde 7 - Made his debut in an unfamiliar position of right-back. Didn’t put a foot wrong and made a block on the line to prevent a Valladolid goal. Getty Images
Sergio Busquets 7 - Played the ball around the midfield to Dembele, who took an early shot. With Pique and Alba unused on the bench, his experience was vital to the young players around him. EPA
Pedri 8 - Set up Dembele for his 20th minute effort which hit the bar, then received the ball from the same player after 43 minutes to side foot Barça into a 2-0 lead. Getting back into playing every game. Getty Images
Gavi 7 - Curled a ball forward to set up Raphinha on 19 minutes and another towards Lewandowski on 35. Played with the security of a side who took an early lead and controlled the game. AFP
Raphinha 8 - Played wide right at the start (then switched wings) and had the vast 83,972 crowd off their seats running at players and beating them. Whipped a cross in for Lewandowksi to head against the bar early on, then shot on target himself after 19 before again spinning a ball across goal which Lewandowski met to put Barça ahead. Getty Images
Robert Lewandowski 9 - Early header off the post, then put his side ahead after 24, sliding in studs first to meet a Raphinha cross. Slid the third in after 63 – with his heel. Incredible goal. He’s settled on the big stage in a new country immediately, with fans singing his name. Getty Images
Ousmane Dembele 8 - Smashed the crossbar on 20 minutes, then cut across the area before shooting with his left foot on 36. Switched to the right and set up Pedri for the second. Set up Lewandowski for the third. Looks focussed and effective. Huge applause when he was substituted. Getty Images
SUBS: Sergi Roberto 7 - On for Araujo after 60. Scored the fourth in the 91st minute. AFP
Ansu Fati 6 - On for Raphinha after 60. Almost always makes a difference, be it by scoring or assisting. Beat two players on 70 to shoot on goal. Getty Images
Frenkie de Jong 6 - On for Gavi after 60. The player linked with a move away all summer has started this season on the bench, as expected. Getty Images
Franck Kessie 6 - On for Busquets after 76, the new midfielder who impressed pre-season. Getty Images
Ferran Torres NA - On for Dembele after 86. AFP
BARCELONA RATINGS: Marc-Andre ter Stegen 7 - Quiet evening in a game which Barcelona dominated – though he roared when Kounde stopped a sure goal on 70 minutes – after Ter Stegen had made a save himself. A clean sheet and already looking better than last season with a better defence in front of him. EPA
Alejandro Balde 8 - Now appears to be the first choice left-back – and on tonight’s showing, justified. “Balde deserves to play,” said his boss Xavi. “I’m so happy for him. Physically he is very strong, he can dribble, he has great offensive ability, he helps us a lot, a spectacular boy.” Getty Images
Ronald Araujo 7 – Deployed as a central defender rather than right-back and a large roar went out when he won the ball from Valladolid striker Guardiola on 40 minutes. AP Photo
Eric Garcia 8 - Played central defender while the old (and expensive) guard of Pique and Alba sat on the bench. Very comfortable. AP Photo
Jules Kounde 7 - Made his debut in an unfamiliar position of right-back. Didn’t put a foot wrong and made a block on the line to prevent a Valladolid goal. Getty Images
Sergio Busquets 7 - Played the ball around the midfield to Dembele, who took an early shot. With Pique and Alba unused on the bench, his experience was vital to the young players around him. EPA
Pedri 8 - Set up Dembele for his 20th minute effort which hit the bar, then received the ball from the same player after 43 minutes to side foot Barça into a 2-0 lead. Getting back into playing every game. Getty Images
Gavi 7 - Curled a ball forward to set up Raphinha on 19 minutes and another towards Lewandowski on 35. Played with the security of a side who took an early lead and controlled the game. AFP
Raphinha 8 - Played wide right at the start (then switched wings) and had the vast 83,972 crowd off their seats running at players and beating them. Whipped a cross in for Lewandowksi to head against the bar early on, then shot on target himself after 19 before again spinning a ball across goal which Lewandowski met to put Barça ahead. Getty Images
Robert Lewandowski 9 - Early header off the post, then put his side ahead after 24, sliding in studs first to meet a Raphinha cross. Slid the third in after 63 – with his heel. Incredible goal. He’s settled on the big stage in a new country immediately, with fans singing his name. Getty Images
Ousmane Dembele 8 - Smashed the crossbar on 20 minutes, then cut across the area before shooting with his left foot on 36. Switched to the right and set up Pedri for the second. Set up Lewandowski for the third. Looks focussed and effective. Huge applause when he was substituted. Getty Images
SUBS: Sergi Roberto 7 - On for Araujo after 60. Scored the fourth in the 91st minute. AFP
Ansu Fati 6 - On for Raphinha after 60. Almost always makes a difference, be it by scoring or assisting. Beat two players on 70 to shoot on goal. Getty Images
Frenkie de Jong 6 - On for Gavi after 60. The player linked with a move away all summer has started this season on the bench, as expected. Getty Images
Franck Kessie 6 - On for Busquets after 76, the new midfielder who impressed pre-season. Getty Images