The Spanish striker, who joined Dortmund from Barcelona in the offseason, scored the winner to give Lucien Favre's men three vital points in the league.
Lewandowski has scored 106 goals in 126 Bundesliga games for Bayern since switching from league rival Borussia Dortmund in 2014. He helped the team win the league each year, chipping in 29 goals this season.
Bayern Munich end their season with the league title only as Frankfurt astonished the Bundesliga champions 3-1 to win the German Cup final at Berlin.
Bayern did it with five rounds to spare, allowing the team to focus on the Champions League and German Cup for the rest of the season.
Frankfurt, which had twice come from behind to pull level, is two points behind Bayer Leverkusen, which occupies the last Champions League qualification spot.
Reus was handed the captain's armband 259 days after the German forward sustained a cruciate ligament injury in the German Cup final.
Stoeger was sacked as Cologne coach the previous Sunday after his side failed to win any of its opening 14 Bundesliga games of the season.
The hosts let a four-goal lead slip away after Schalke ran riot after half-time to salvage a draw in the dying minutes of a thriller match.
Hertha's starting lineup linked arms and took a knee on the pitch, while Pal Dardai's coaching staff, general manager Michael Preetz, club officials and substitutes took a knee off it before kickoff.
Ancelotti acknowledged he would face criticism for his lineup but remained defiant after the game against PSG in the Champions League.
Goals from Robert Lewandowski and Arjen Robben counted for little as Bayern dropped points for the second time in six games following a lacklustre performance.
While the Colombian midfielder made his first league start for Bayern, American teenager Weston McKennie did likewise for the home team.
Robert Lewandowski marked his 100th league appearance for Bayern with his 81st and 82nd goals, which came on the first day of the 184th beer festival.
Ancelotti, who has been irritated by questions over his rotation policy, faces added pressure after being outshone by Hoffenheim's coach Julian Nagelsmann.
Counterpart Carlo Ancelotti was left pondering how his side lost after 23 efforts at goal.
Steinhaus has already spent a decade refereeing in Germany's second division and she has plenty of experience with many of the country's top stars from taking charge of German Cup games as well.
Juventus wanted a central defender after Leonardo Bonucci's departure to AC Milan. Howedes, who also can play as a left-back or a right-back, will be Juventus' fifth central defence option.
As the transfer window closes this month, Europe's giants are still on the look out for players from different clubs.
Pulisic scored Dortmund's first league goal of the season after good work by Mario Goetze, who was making his first Bundesliga start since December after an illness.
Bibiana Steinhaus, a police officer by profession, is among four referees to have been promoted by the German football federation (DFB) into the league's elite group of 24.
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