US Open – Zverev, Maria and Niemeier are in the second round

The Hamburger beat Maximilian Marterer 6:2, 6:7, 6:3 and 6:2 in an all-German duel. Jule Niemeier also reached the next round. She surprisingly won 6:4, 6:7 and 6:4 against the 32nd seeded Ukrainian Dajana Jastremska. Tatjana Maria defeated Solana Sierra 6:2 and 6:3. Maria’s next opponent is the third defending champion Coco Gauff of the USA.