De Minaur's semifinal opponent will be Tiafoe, who defeated Mikael Ymer 4-2, 4-2, 4-2. Kecmanovic beat Alejandro Davidovich Fokina 4-1, 4-1, 4-3 (6) and will face Italian teenager Jannik Sinner for a spot in the final.
Kecmanovic finished with a 2-1 record in Group A at the event, which features a unique format where each set is first to four games. Tiafoe was 2-1 in Group B, while Sinner advanced by winning his opening two matches in the group.
More AP Tennis: https://apnews.com/apf-Tennis and https://twitter.com/AP_Sports