It shouldn t be a difficult task against Rublev , who won his maiden Grand Slam match against Lu Yen - Hsun in the first round .
Is yet to win back - to - back matches at tour level .
It shouldn t be a difficult task against Rublev , who won his maiden Grand Slam match against Lu Yen - Hsun in the first round and is yet to win back - to - back matches at tour level .