Medvedev, who also eliminated Ivashka in ‘s-Hertogenbosch last week, saved three set points when trailing 5-4 in the first set.
After returning to No. 1 in the rankings this week, with Novak Djokovic dropping to No. 3, Medvedev acknowledged that may add to his opponents’ motivation in Halle.
“Some are going to be a little bit intimidated that they are playing the World No. 1 and they have a tough draw. If they lose, maybe it is nothing special,” Medvedev said. “And some on the contrary. Maybe they don’t have the best confidence at the moment and if they beat the World No. 1, that is where it starts.”