Robert Lewandowski scored twice as Bayern Munich moved a step closer to the Bundesliga title while his former club Borussia Dortmund slumped to a 3-1 defeat at Borussia Moenchengladbach on Saturday.

Lewandowski scored in either half and Thomas Mueller added another in the 82nd minute to give injury-hit Bayern a 3-0 win at home over similarly depleted Eintracht Frankfurt.

Poor defending cost Dortmund dearly in Moenchengladbach, where Oscar Wendt scored in the first minute before Raffael and Havard Nordtveit made it 3-0. Ilkay Gundogan scored Dortmund's consolation in the 77th.

"Everything's going for us at the moment. We're confident and we want to stay near the top," said Wendt, whose side consolidated third place.

Bayer Leverkusen stayed two points behind 'Gladbach with a 3-2 win at Mainz, Paderborn boosted its chances of avoiding the drop with a 2-1 win at home over Augsburg, and Schalke was whistled by its own fans after being held to a 0-0 draw by relegation-threatened Freiburg. Markus Feulner missed a penalty for Freiburg.

"We need a miracle now," Schalke's Julian Draxler said of his side's chances of Champions League qualification. Schalke was 10 points behind Leverkusen with six games remaining.

Hamburger SV slipped into the relegation zone ahead of its late game at home to second place Wolfsburg.

Bayern coach Pep Guardiola described his side's injury situation as "critical, very critical" due to the absences of wingers Arjen Robben and Franck Ribery, midfielders Bastian Schweinsteiger and Javi Martinez, as well as defenders David Alaba and Mehdi Benatia.

The Spaniard opted to rest goalkeeper Manuel Neuer ahead of Wednesday's Champions League quarterfinal first leg at Porto, and his replacement Pepe Reina had little to do as Frankfurt was without injured top scorer Alexander Meier.

"We didn't have a chance today," Frankfurt coach Thomas Schaaf said. "You just need to look at the table. How many points have Bayern? Twice as many as us."

Bayern has 70 points and needs just three more wins for its third straight Bundesliga title.

Lewandowski opened the scoring in the 15th minute, taking Mueller's pass with his back to goal, flicking the ball over a defender, then turning and smashing it on the volley into the top left corner. TV replays showed the Polish striker was marginally offside but the goal stood.

Mueller had a goal ruled out toward the end of the half for a perceived infringement, and Mario Goetze struck the post, before Lewandowski claimed his 16th league goal of the season, a close-range header in the 66th.

Mueller completed the scoring after Mitchell Weiser lifted the ball over Frankfurt keeper Kevin Trapp. Mueller stopped it going out of play, turned and slotted home from a difficult angle.

Wendt got 'Gladbach off to a great start by scoring from the rebound after Roman Weidenfeller saved Max Kruse's effort. The chance came after Raffael and Patrick Herrmann made the most of some dismal Dortmund defending.

Herrmann outsprinted the heavy-footed Dortmund defense to give Raffael a tap-in for 2-0 in the 32nd. "Patrick BOLT Herrmann," the club tweeted.

Nordtveit scored after a corner in the 67th, and Gundogan was unable to prevent Dortmund's 13th defeat of the season.

"The opponent made the most of our mistakes," Dortmund coach Juergen Klopp said.

In Mainz, Son Heung-min volleyed Hakan Calhanoglu's cross for Leverkusen's 15th-minute lead, Stefan Kiessling made it 2-0 in the 60th, and Calhanoglu scored from a free kick in the 73rd.

Two late penalties from Koo Ja-cheol were just too late for Mainz.

Paderborn's first win after six games without scoring lifted the promoted side provisionally above Hamburg into the relegation playoff place.

Elias Kachunga scored in the 48th minute, only for Pierre-Emile Hojbjerg — on loan at Augsburg from Bayern — to equalize with a powerful strike four minutes later.

Srdjan Lakic scored what proved to be the winner with a fine header on the hour.