Alexander Zverev: "The field here is incredibly strong"

Alexander Zverev is back in Germany. Number five in the ATP world rankings is the top seeded player at this year's MercedesCup. It is Zverev's first appearance in Stuttgart since 2015, his third overall in the Swabian metropolis. After a training session with Felix Auger-Aliassime, the German number one in men's tennis answered journalists' questions.