Barcelona faced Sevilla, with Lewandowski returning as the lead striker, replacing Ferran Torres.
Lewandowski converted a clever corner, sliding home after Iñigo Martínez's headed.
Lewandowski is the first since Messi (2019/20) to score 19+ goals in 22 La Liga games.
Messi scored record 672 goals for Barca, cementing his legacy as the club's greatest-ever player.
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