Stefanos Tsitsipas advanced to the next round of the ATP Doha tournament with a composed 6-4, 6-4 win over Tunisian wildcard Moez Echargui, ranked No. 139 in the world.
The Greek was dominant on serve, not conceding a single break point, and broke once in each set to seal victory in 1 hour and 26 minutes.
He now faces longtime rival Daniil Medvedev, who leads their head-to-head record 10-4 from 14 previous meetings.
