Sixth seed Alex Michelsen of the United States was never broken as he beat Germany’s Yannick Hanfmann 6-2, 6-3 in 1 hour 8 minutes on Monday to reach the last 16 of the Stockholm Open. He will next face Argentina’s Juan Manuel Cerundolo, who beat Swedish wildcard Elias Ymer 6-1, 7-6 (4) on Sunday.

How Michelsen beat Hanfmann

Michelsen broke Hanfmann twice in the first set, for 4-2 and then on set point at 6-2. The American saved the only break point he faced, in the opening game of the second set.

Hanfmann held on until 3-4, when Michelsen broke him to love. The sixth seed served out the match two games later.

Michelsen hit 23 winners to Hanfmann’s 13 and won 12 of his 13 points at the net, according to Flashscore. He also won 81 per cent of the points on his first serve (29 of 36).

Michelsen faces Cerundolo next

Michelsen, 22 and ranked No. 35, arrived from the Rolex Paris Masters. There he beat Jiri Lehecka 6-7 (5), 6-2, 6-4 in the first round, before losing to Carlos Alcaraz 7-6 (4), 6-3.

The American is still looking for his first ATP title. He has lost all three finals of his career, the most recent against Lorenzo Sonego in Winston-Salem in 2024, 6-0, 6-3.

A win over Cerundolo would put him in the quarter-finals of the Bybit Stockholm Open, where fourth seed Alejandro Tabilo awaits the winner of the match between qualifier Lorenzo Sonego and Quentin Halys.

Bybit Stockholm Open 2026 first-round results

Cameron Norrie d. James Duckworth 7-5, 6-0
Arthur Rinderknech vs Miomir Kecmanovic
Holger Rune vs Zizou Bergs (8)
Leo Borg (WC) vs Toby Samuel (Q)
Tomas Machac vs Borna Gojo (Q)
Adolfo Daniel Vallejo vs Ugo Humbert (7)
Alex Michelsen (6) d. Yannick Hanfmann 6-2, 6-3
Juan Manuel Cerundolo d. Elias Ymer (WC) 6-1, 7-6 (4)
Lorenzo Sonego (Q) vs Quentin Halys
Tomas Martin Etcheverry (5) vs Max Dahlin (WC)
Thiago Agustin Tirante d. Jaume Munar 7-6 (3), 6-3
Adrian Mannarino (LL) vs Alexander Shevchenko (Q)

In bold: today’s results.