Federer will face a Qualifier; then if he gets through that it will be Radu Albot or Dusan Lajovic in the second round.
Stan Wawrinka will take on Pablo Cuevas; who fell to Andy Murray at the European Open in Antwerp.
Other ties include David Goffin against Marin Cilic; Taylor Fritz versus Alexander Zverev; as well as Roberto Bautista-Agut against Marius Copil.
It all kicks off tomorrow and is an ATP 500 tournament with over 2 million in prize money set to be up for grabs.