ESTORIL/STARNBERG, May 4, 2025

Rising US-American Alex Michelsen captured the biggest title of his career on Sunday by winning the 10th edition of the Millennium Estoril Open. The 20-year-old Californian, ranked World No. 38, defeated Italian qualifier Andrea Pellegrino 6-4, 6-4 in 74 minutes to secure his third ATP Challenger Tour title, his first title on clay.

Michelsen, a finalist at three ATP Tour events, didn’t drop a set all week en route to the crown. His triumph will see him climb to a career-high ranking of World No. 32, matching his best position achieved earlier this year in March.

The match followed a similar pattern in both sets: Michelsen broke serve in the fifth game, allowed Pellegrino to level, but pulled ahead again with a break in the seventh. The No. 2 seed of the ATP Challenger Tour 175 event showcased his aggressive all-court game, proving his attacking weapons were just as effective on clay. His serve was dominant throughout the tournament – he was broken only four times across his four victories.

Alex Michelsen was 10 when the first Millennium Estoril Open took place.

He’s now the 10th different champion in 10 editions of the biggest tournament in Portugal. pic.twitter.com/o3bypID3Pa

— Gaspar Ribeiro Lança (@gasparlanca) May 4, 2025

With this win, Michelsen becomes the first US-American to lift the trophy at the Clube de Tenis do Estoril. He pocketed €34,900 in prize money as well as 175 ATP Ranking points. Michelsen also surpasses Stefanos Tsitsipas to become the youngest champion in the tournament’s 10-year history, clinching the title just 14 days younger than the Greek star when he won in 2019.

After a year hiatus from the ATP Tour, the Millennium Estoril Open will return as a 250 event next year.