Having beaten Stan Wawrinka in the Rotterdam Open last year, Tallon Griekspoor added the scalp of world number 11 Karen Khachanov.
After exiting the Australian Open at the hands of Lucas Pouille, Milos Raonic may have to miss the Davis Cup due to an ongoing knee problem.
Lucas Pouille produced an upset win against Milos Raonic in the Australian Open quarter-finals.
Lucas Pouille concedes that even he did not expect to reach the semi-finals of the Australian Open.
Pablo Carreno Busta and Alexander Zverev's frustration got the better of them as they suffered contrasting Australian Open exits.
Alexander Zverev self-destructed in his straight-sets loss to Milos Raonic in the Australian Open last 16.
There were wins for Novak Djokovic and Alexander Zverev at the Australian Open on Saturday, while Fabio Fognini was beaten.
There were wins for Novak Djokovic and Alexander Zverev at the Australian Open on Thursday.
Milos Raonic had to dig deep in a four-set victory over 2014 champion Stan Wawrinka at Melbourne Park.
Nick Kyrgios described Milos Raonic's performance against him as "scary", while Novak Djokovic and Alexander Zverev eased into round two.