Third-seeded Gael Monfils has been eliminated in the first round of the Hamburg European Open, losing 6-4 6-3 to 103rd-ranked Yannick Hanfmann.
Hanfmann needed just 1 hour and 13 minutes to wrap up the win and the German will next face Cristian Garin, who swept past Kei Nishikori 6-0 6-3.
Fourth-seeded Roberto Bautista-Agut won 6-4 6-3 against Nikoloz Basilashvili to set up a second-round meeting with Dominik Koepfer.
Fabio Fognini built up momentum after a slow start to oust Philipp Kohlschreiber 4-6 6-1 7-5.
The sixth-seeded Italian will play either Casper Ruud or Benoit Paire in the second round.