Stuttgart Open: Wildcard Engel through to quarter-finals

German wildcard Justin Engel reached the quarter-finals of the Stuttgart Open by winning against American Alex Michelsen, the No 7 seed, 6-4, 6-4 at Tennisclub Weissenhof Stuttgart on Thursday.

Engel, ranked No 281, will play the winner of the match between Frenchman Giovanni Mpetshi Perricard and Canadian Felix Auger-Aliassime, the No 4 seed, next.

In the previous round of the Stuttgart tournament, the 17-year-old German edged out Australian qualifier James Duckworth (4-6, 6-4, 7-6 (5)).

Michelsen, ranked No 35, defeated Frenchman Gael Monfils (6-4, 4-6, 6-3) in the previous round of the Stuttgart tournament.

Stuttgart ATP 250, other second-round results (Tennisclub Weissenhof Stuttgart, grass, EUR 751.630, most recent results first):

• Learner Tien vs. Brandon Nakashima
• Alexander Zverev vs. Corentin Moutet
• Giovanni Mpetshi Perricard vs. Felix Auger-Aliassime
• Jiri Lehecka (8) beat Jan-Lennard Struff (WC): 6-4, 7-5
• Taylor Fritz (2) beat Quentin Halys: 6-3, 7-6 (6)
• Ben Shelton (3) beat Pierre-Hugues Herbert (Q): 7-6 (4), 7-5
• Marton Fucsovics (Q) beat Arthur Rinderknech: 7-6 (4), 6-3