"It may have looked pretty easy, but it's really not," Alonso told reporters after his team cruised to four first-half goals to break the Dutch resistance.

Bayer Leverkusen's 35-game unbeaten Bundesliga run came to an end in their last game and manager Xabi Alonso hopes the short time he has had with his players will be sufficient to get back to winning ways.

Granit Xhaka praised his side's "pure mentality" as Florian Wirtz's goal in the 11th minute of stoppage time snatched a 3-2 win for reigning champions Bayer Leverkusen at Borussia Moenchengladbach in Friday's Bundesliga opener.

Bayer Leverkusen coach Xabi Alonso said Thursday that Bayern Munich are the Bundesliga title favourites this season, despite his side's incredible league and cup double last campaign.

"What we did in the last 10 or 15 minutes, with a man down, to score the equaliser -- it was unbelievable," Leverkusen coach Xabi Alonso said after the match, praising his side's "huge spirit".

Vincent Kompany was officially presented as Bayern Munich's new coach on Thursday, insisting he did not share the football world's surprise at his appointment.

Bayer Leverkusen's German league and Cup double was the result of players keeping faith in the team throughout what turned into a dream season, their coach Xabi Alonso said on Saturday.

Leverkusen missed out on a treble after losing 3-0 to Atalanta in the Europa League final on Wednesday in their first defeat of the season after a European record 51-game unbeaten run.

Bayer Leverkusen face second-division Kaiserslautern in Saturday's German Cup final licking their wounds after a first loss in almost a year.

Leverkusen - or 'Neverlusen' as they had been dubbed after obliterating Bayern Munich's 11-year Bundesliga title monopoly in Germany - can still win a domestic double with victory against second-tier Kaiserslautern in Saturday's German Cup final.

Bayer Leverkusen had won only two major trophies in their 119-year history before this season but on Wednesday the newly-crowned Bundesliga champions have the chance to claim a double when they face Atalanta in the Europa League final in Dublin.

Bayer Leverkusen's Florian Wirtz has been voted Player of the Season in the Bundesliga, the German League said on Monday, after the midfielder helped his club in winning their first league title.

Alonso's men, who have a Europa League final against Atalanta and a German Cup final versus Kaiserslautern to come this week, have not lost in any competition this season -- a run of 51 games.

Champions Bayer Leverkusen edged past Augsburg 2-1 on the last matchday on Saturday to become the first team in the history of the Bundesliga to complete a full season without a loss.

Bayer Leverkusen stretched their season-long unbeaten run to 50 games with a 5-0 win at 10-man Bochum on Sunday.

Leverkusen, the Bundesliga champions who have also reached the May 25 German Cup final, played their 49th match without defeat in all competitions, surpassing Benfica's long-standing European record set from 1963 to 1965.

Xabi Alonso's rampaging Bayer Leverkusen will have an additional incentive in Thursday's home second-leg Europa League semifinal against Roma: breaking a 59-year-old European football record.

Bundesliga champions Bayer Leverkusen extended their season-long unbeaten run to 48 games with a 5-1 win at Eintracht Frankfurt on Sunday.

Leverkusen won their first meeting with Roma in almost 20 years.

After years of heartbreak and being dubbed "Neverkusen" for their string of runners-up finishes, Bayer Leverkusen finally broke through to claim their first-ever Bundesliga title. Their 5-0 victory over Werder Bremen last week secured the trophy, marking a watershed moment in the club's 119-year history. Although they have enjoyed intermittent cup success, this league title signifies a shift in their fortunes.