Bold promises often follow victory, and for Alexander Zverev, his triumph at the ATP 500 Munich Open on his 28th birthday felt like more than just another tournament win.

Dressed in traditional Bavarian leather pants, the German lifted the trophy in front of an adoring home crowd that serenaded him with a heartfelt rendition of "Happy Birthday". The title marked his 24th career win and ended a frustrating run of early exits that had marred the start of his 2025 season.

Zverev's struggles this year included a humbling loss to world No. 1 Jannik Sinner in the Australian Open final, followed by a string of disappointing performances that left him questioning his form.

Alexander Zverev hits a return during the men's singles semifinal match between Alexander Zverev of Germany and Fabian Marozsan of Hungary at the BMW Open 2025 in Munich, Germany, April 19, 2025. (Photo by Philippe Ruiz/Xinhua)

"For several months, I've tried to understand, but I haven't got a clue what's wrong," he admitted. "It has been a hard time for me."

But Sunday's victory seemed to lift the clouds. Zverev, visibly emotional and relieved, declared to fans, "We have ten more years ahead."

Among those applauding from the stands was Bayern Munich's Thomas Muller, as Zverev celebrated a week that not only brought him a long-awaited title but also pushed him up to world No. 2 in the rankings. He now holds a narrow 35-point edge over Carlos Alcaraz, who lost the final in Barcelona.

"I am so happy about this win," Zverev said. "It's a perfect week."

The Olympic gold medalist said he was looking forward to two days off with family and friends when the news of his ranking promotion arrived. The victory also rekindled his hopes heading into the clay-court season, with upcoming events in Madrid and Rome before the French Open in late May.

"I don't want to talk about the past months, that's behind me," he said. "This birthday could hardly be happier."

Zverev's form had become a topic of national conversation, with media and analysts weighing in on his recent slide. Tennis legend and former Novak Djokovic coach Boris Becker even appeared at Zverev's training sessions, sparking speculation about a possible coaching partnership.

"We have a close relationship, but if there is news, I will tell you right away," Zverev said when asked about Becker's involvement.

The Hamburg native expressed confidence that he can build momentum heading into Roland Garros. "I can't have forgotten about tennis since the Australian Open," he said. "I want to carry the emotions from Munich into the next weeks."

Among his birthday gifts was a chocolate cake presented by tournament director Patrik Kuhnen - a sweet reminder of a week Zverev hopes will mark a turning point in his season.