Dortmund rout Leverkusen 4-0, Leipzig hold Bayern 1-1

Paco Alcácer warmed up for the visit of his former club Barcelona by continuing his remarkable scoring streak as Borussia Dortmund beat Bayer Leverkusen 40 in the Bundesliga on Saturday.

Alcácer, whose loan deal from Barcelona was made permanent in November, claimed his fifth goal in four league games in the first half and produced a dummy which saw Marco Reus score off Jadon Sancho's cross in the second.

The striker has scored in each of his eight competitive appearances this season, claiming seven goals for Dortmund — including in the season-opening German Supercup — and three in two games for Spain.

Raphaël Guerreiro sealed the win before Reus claimed his second goal to celebrate his 100th win with Dortmund in the final minute.

Dortmund conceded in each of its previous three league games and was looking to bounce back after a surprise 3-1 loss at Union Berlin.

"The team stayed calm and didn't make any major mistakes," Dortmund coach Lucien Favre said. "It was important not to concede."

Dortmund hosts Barcelona in their Champions League opener on Tuesday.

LEIPZIG REMAINS UNBEATEN

Leipzig held Bayern Munich to 1-1 in the late game, staying top after four games, one point ahead of Dortmund and two clear of Bayern.

Robert Lewandowski got Bayern off to a flying start with his league-leading seventh goal in four games in the third minute.

The visitors thoroughly dominated the first half and might have added three more. Referee Sascha Stegemann pointed to the penalty spot after Leipzig winger Marcel Sabitzer appeared to bring down Lucas Hernández, but changed his decision after an intervention from the video referee.

Bayern was left to rue missed chances when Hernández conceded a penalty by bringing down Yussuf Poulsen after a mistake from Thiago Alcântara.

Emil Forsberg duly equalized with the last kick of the half.

The home side was much improved in the second half, when Manuel Neuer came to Bayern's rescue and defender Niklas Süle grazed the Leipzig post with the last play of the game.

THREE PENALTIES, TWO RED CARDS AND VAR

The first few minutes of Werder Bremen's 2-1 win at Union Berlin were spent on VAR checks after a second-minute penalty decision. Davy Klaassen had to wait till the fifth before opening the scoring from the spot.

TV replays showed it was a questionable call, with Klaassen apparently already falling before Christopher Lenz made contact.

VAR was required again in the 12th to check whether Christian Groß handled the ball at the other end, before Sebastian Andersson duly equalized from the spot in the 14th.