BERLIN -- Bayern Munich won the Women's Bundesliga for the fourth straight year on Wednesday with a 3-2 victory at league newcomer Union Berlin.
Klara Bühl set up fellow substitute Giulia Gwinn for a late winner after Union twice fought back to equalise.
The Bavarian powerhouse next turns its attention to Barcelona's visit on Saturday for the first leg of their Champions League semifinal. Bayern is bidding to reach the final for the first time while mindful of Barça's 7-1 rout when they met for their opening game in the league phase.
Bayern encountered no such issues in the Bundesliga, winning every game with the exception of a draw at home to Carl Zeiss Jena in September. Jena is now bottom of the table, fighting for survival.
Bayern coach José Barcala rested a host of regulars against Union with the likes of Gwinn, Bühl and Pernille Harder starting on the substitutes' bench.
It seemed not to matter with Edna Imade scoring after a corner in the eighth minute.
But Sophie Weidauer delighted the large crowd in Union's 22,000 capacity Stadion An der Alten Försterei -- where the men's team also plays -- when she capitalised on a defensive error and set off on a run before beating Bayern goalkeeper Cara Bösl in the 11th.
Bayern had to wait till the 50th for Barbara Dunst to respond with a long-range shot that squeezed inside the left post.
Lia Kamber pulled Union level again after a well-worked move in the 77th, but Bayern's perseverance paid off through Gwinn's winner in the 84th.
The team moved an unassailable 15 points clear of Wolfsburg -- the last side other than Bayern to win the title in 2022 -- with three rounds to play.
Wolfsburg drew 0-0 at Werder Bremen.
Bayern, the defending champion, also faces Wolfsburg in the Women's German Cup final on May 14 in Cologne.
Bayern's men clinched their Bundesliga title on Saturday.
