Leverkusen, who needed a win to win the championship, seized the lead in the 25th minute when Jonas Hofmann was hauled down inside the penalty area. Victor Boniface scored the penalty.
Bayer Leverkusen defeated Werder Bremen 5-0 on Sunday to win the Bundesliga for the first time ever.
Leverkusen has overcome Bayern Munich’s 11-year hegemony in the Bundesliga, becoming the first team to do it since Borussia Dortmund in the 2011–12 campaign.
Bayer, who needed a win to lift the Bundesliga trophy, seized the lead in the 25th minute when Jonas Hofmann was hauled down inside the penalty area. Victor Boniface scored the penalty.
When Amine Adli attempted a left-footed effort from the left side of the box in the 38th minute, Leverkusen nearly doubled their lead.
Mitchell Weiser headed the ball towards goal from close range shortly before halftime, giving Werder Bremen a chance to tie the score. Leverkusen goalkeeper Lukas Hradecky had to make a fantastic stop to keep his team ahead at the break.
Granit Xhaka, a former Arsenal player, scored an incredible first-time effort from outside the box into the upper left corner to extend the advantage for the home team in the 60th minute after Boniface set him up.
Florian Wirtz, a halftime replacement, gave Leverkusen their third goal eight minutes later. He struck the ball powerfully from outside the box, giving the opposing keeper no chance to save it.
After receiving a gorgeous ball over the top from Exequiel Palacios, Wirtz broke free and set himself up for a one-on-one with the goalie in the 83rd minute to double his tally. A lot of home fans invaded the ground, interrupting his celebrations after he calmly finished into the bottom corner.
When he completed his hat-trick in the ninetieth minute, supporters flooded the field once more, forcing the referee to sound the full-time whistle.
With five games remaining, the Xabi Alonso-led team had clinched the league title with 79 points, 16 more than Bayern, who were in second place. In addition, it shattered the Bundesliga record for the most wins in a single season.