Argentina striker Lucas Alario continued his fine run of form with two crucial first-half goals as Bayer Leverkusen came from behind to beat Freiburg 4-2 in the Bundesliga on Sunday.

After a disastrous first half hour for Leverkusen, Alario struck twice before the break to turn the game on its head and fire his team back into the top four.

The Argentine now has seven goals from eight games in all competitions, and has found the net in each of his last three league appearances.

Leverkusen, meanwhile, remain the only Bundesliga team yet to be beaten after the first six games of the season.

Freiburg took the lead after just three minutes, Lucas Hoeler latching onto a 50-yard through ball from Lukas Kuebler and flicking the ball past Leverkusen keeper Lukas Hradecky.

Jonathan Schmid doubled the lead with a brilliant volley five minutes later but the goal was annulled after Hoeler was ruled offside in the build-up.

Leverkusen were bracing themselves for a long afternoon when Sven Bender was shown the red card for a trip on Hoeler in front of goal, but the decision was reversed by VAR.

Having ridden their luck in the first half hour, Leverkusen ruthlessly took their chances from then on, with Alario turning the game on its head with two quick goals before half-time.

The Argentine pounced on a misplaced pass from Nicolas Hoefler to slot home the equaliser, before turning in a low cross from Lars Bender to put Leverkusen ahead just minutes before the break.

Peter Bosz's side looked to be in the clear when Nadiem Amiri smashed in a third on 65 minutes, but a tap-in from substitute Nils Petersen quickly brought Freiburg back into the game.

Yet the home side's revival was short-lived, as centre-back Jonathan Tah rose high at a corner to head in Leverkusen's fourth and seal the three points.

While Leverkusen return to the top four, Freiburg now sit just three places adrift of the bottom three, having not won since the opening day of the season.