The No. 3 seed at the National Bank Open in Toronto celebrated the milestone Thursday with a 6-2, 6-3 win over Russia’s Karen Khachanov to advance to the quarterfinals.
He’ll face Casper Ruud of Norway in the quarterfinals on Friday. The pair met at the Madrid Open in May, with Ruud taking a straight-sets victory in the round of 16.
“I’m looking forward to that battle,” Tsitsipas said. “We have played each other in the past, (he’s) not an easy guy to play against. I’m looking for a change, looking for a switch-up this time.”