È finita in semifinale l'ottima avventura di Stan Wawrinka (ATP 284) a Metz. Dopo aver battuto Daniil Medvedev (4) agli ottavi e Mikael Ymer (100) ai quarti, nel penultimo atto il rossocrociato si è ritirato dopo soli 17' della sfida con Alexander Bublik (44) a causa di problemi fisici. Il 37enne, che già da inizio partita si è mostrato non in piena forma, ha salutato il torneo quando era sotto 2-1, permettendo così al kazako di raggiungere Lorenzo Sonego (65), vittorioso su Hubert Hurkacz (10), in finale.
Partito dalle qualificazioni, il vodese ha disputato così sei match in sette giorni e già durante la partita contro Ymer aveva richiesto un medical time out. Nonostante qualche dubbio sulle sue condizioni, Stan è poi riuscito a portarsi a casa l'incontro al terzo set accedendo così alla sua prima semifinale ATP dopo oltre due anni e mezzo, terminata però troppo presto.
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