De Minaur reaches Vienna quarter-finals and strengthens ATP Finals bid

Alex de Minaur beat Learner Tien in straight sets to reach the quarter-finals of the Vienna tennis tournament.

The Australian won 6-4, 6-2 in 78 minutes, controlling the match and making fewer unforced errors than Tien.

The win lifts de Minaur provisionally to ninth in the live standings for the ATP Finals, the season-ending event in Turin.

He was 10th before the tournament and needs to finish in the top nine because world No.

1 Jannik Sinner is out for the rest of the season.

Sinner's place passes to the next player on the selection list, leaving five places still available in the race.

De Minaur is seeking a third straight appearance at the Finals, where the season's leading players compete.

He next faces Flavio Cobolli or Matteo Berrettini for a place in the Vienna semi-finals.