Dortmund's Nuri Sahin goes for the creative shot against Wolfsburg on Sunday afternoon. Dortmund won 3-1. (Fabian Bimmer/Associated Press)

Lucas Barrios scored two early goals as Borussia Dortmund easily defeated defending champion Wolfsburg in the Bundesliga on Sunday, while 10-man Stuttgart conceded a late penalty to draw with Mainz.

Dortmund went three goals ahead in the first half before winning 3-1 at Wolfsburg to extend its undefeated run to nine games, while Mainz maintained its unbeaten home record thanks to a late penalty that gave it a 1-1 draw with Stuttgart.

Juergen Klopp's team jumped to sixth place in the standings with 27 points from 16 matches with its sixth victory in the nine-game stretch.

Barrios was twice set up by Mohamed Zidan in scoring in the eighth and 10th minutes. And Patrick Owomoyela made it 3-0 after 37 minutes.

Grafite pulled a goal back in the 55th and Wolfsburg has not won in four games. The result means that Wolfsburg has dropped to ninth place with just 23 points from 16 games.

The early game Sunday saw Mainz draw level with a 90th-minute penalty after Stuttgart keeper Jens Lehmann was red-carded with two minutes left for stepping on the foot of Mainz striker Aristide Bance.

Eugen Polanski converted the penalty, which equalized Pavel Pogrebnyak's 11th-minute goal for Stuttgart, which failed to win in its last nine Bundesliga games.

Russian international Pogrebnyak, who also scored in Stuttgart's win over Unirea Urziceni to enable the team to reach the knockout stages of the Champions League, scored with his knee after Arthur Boka crossed the ball into the box.

"It's bitter of course that we gave up the equalizer. We fought and gave everything we had. But we should have had much more than just a draw, even though they had a number of chances as well," said Stuttgart chairman Horst Heldt.

It was the first game for new coach Stuttgart coach Christian Gross, who replaced Markus Babbel.

Stuttgart now has just 13 points and is in 15th place, just above the relegation zone.

Stuttgart looked like it would hold on for the victory until the latest incident involving Lehmann. There was already talk later Sunday that Stuttgart should get rid of the 40-year-old keeper, who earlier in the week said he would not pay a fine for recent critical comments he made on German television.