The Swiss great next faces French player Pierre-Hugues Herbert for the first time. The 43rd-ranked Herbert progressed after defending champion Borna Coric withdrew injured after Herbert won the first set of their quarterfinal 7-5.
David Goffin upset the second-seeded Alexander Zverev 3-6, 6-1, 7-6 (3) and will next face Stuttgart Open champion Matteo Berrettini. The Italian defeated the third-seeded Karen Khachanov 6-2, 7-6 (4).
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