Among the top names involved include Daniil Medvedev who is top seed and will start his campaign against Ugo Humbert. But while Medvedev receives a good draw, Stefanos Tsitsipas has received a tough one; as he faces British Number 1, Dan Evans. There are already doubts on the Greek's clay form; after losing out to Jannik Sinner in Rome.

Third seed Gael Monfils who lost to Dominik Koepfer in his return to action after the restart will also receive a potentially tough test in Yannick Hanfmann.

The German reached the final in stunning fashion in Kitzbuhel and has already shown clay court form so could be a shock in the making.

Among the other ties include Karen Khachanov v Jan-Lennard Struff and Fabio Fognini v Philipp Kohlschreiber in a stacked field set to descend on Hamburg.