After starting the La Liga season with a goalless draw against Rayo Vallecano, Barcelona have produced two strong performances against Real Sociedad and now Valladolid – signs that the Catalan club could be heading for better results this season compared to the last.
Lewandowski was denied by the post early in Sunday’s game, as was Ousmane Dembélé 10 minutes later.
However, the Polish striker took advantage of Barca’s pressure and netted his first goal by converting Raphinha’s cross with a fine finish at the far post.
Pedri doubled the Blaugrana’s lead from inside the box just before half-time, and the game was almost over shortly after the hour mark for newly promoted Valladolid when Lewandowski produced a superb back heel on the pass from Dembele.
Lewandowski almost scored a hat-trick in the final moments, but his shot ricocheted off the crossbar and fell on Sergi Roberto, who completed the rout.
The French defender proved a useful addition to the starting line-up as he cleared a shot off the line midway through the second half.
Barcelona are third in La Liga behind defending champions Real Madrid and Real Betis after three games and next face Sevilla, winless so far this season, on Saturday.