Granit Xhaka scored the only goal as a 10-man Bayer Leverkusen beat Kaiserslautern 1-0 to lift the German Cup in Berlin on Saturday and give the club the league-cup double.
Xabi Alonso's side were thoroughly outclassed in a 3-0 loss to Atalanta in the Europa League final on Wednesday, their first defeat in any competition since May 2023 -- a run of 51 games.
Ademola Lookman became the first player to score a hat-trick in a European final since 1975 to secure Atalanta's first ever continental trophy.
Bayer Leverkusen's chances in Wednesday's Europa League final clash with Atalanta in Dublin have been boosted by the return of star midfielder Florian Wirtz to full fitness.
Atalanta have a date with history and Bayer Leverkusen on Wednesday when the Italians aim to become the first team to beat the new German champions this season and win their first ever European final.
Xabi Alonso's Leverkusen can become the first team in Bundesliga history to go through a campaign unbeaten by avoiding defeat against Augsburg.
Bayer Leverkusen stretched their season-long unbeaten run to 50 games with a 5-0 win at 10-man Bochum on Sunday.
Bayer Leverkusen are through to the Europa League final 4-2 on aggregate after a stoppage-time goal from Josip Stanisic snatched a 2-2 draw at home on Thursday
Xabi Alonso's rampaging Bayer Leverkusen will have an additional incentive in Thursday's home second-leg Europa League semi-final against Roma: breaking a 59-year-old European football record.
Xabi Alonso's team have needed a string of last gasp goals to keep their unbeaten run going in recent weeks but there was no need for any frantic finishes in the Italian capital as Bayer Leverkusen's superiority was fully on display.
Bayer Leverkusen are gunning for revenge on Thursday when they travel to a second Europa League semi-final against Roma in as many years after yet another late escape kept their remarkable unbeaten run intact.
Robert Andrich scored with the last kick of the match to extend Bayer Leverkusen's unbeaten run to a 46th game this season with a 2-2 home draw against Stuttgart on Saturday
Josip Stanisic scored in the seventh minute of stoppage time as Bayer Leverkusen extended their unbeaten run to 45 games in all competitions with a 1-1 draw at Borussia Dortmund on Sunday.
Bayer Leverkusen won the Bundesliga for the first time last weekend, ending Bayern Munich's 11-year grip on the title.
Bayer Leverkusen coach Xabi Alonso said his unbeaten side was "not done yet" after winning their debut league title on Sunday with a treble still possible this season.
Bayer Leverkusen win first Bundesliga title, breaking Bayern Munich's 11-year run.
The stunning victory for the side who sit sixth in Serie A ends Liverpool's 33-game unbeaten run at home.
Should Xabi Alonso's Bayer Leverkusen keep pursuit of a remarkable treble, the Bundesliga leaders will need to get past a dogged West Ham buoyed by recent European successes.