ATP roundup: Frances Tiafoe reaches quarters in Stuttgart
Defending champion Frances Tiafoe moved to the quarterfinals of the Boss Open at Stuttgart, Germany, on Wednesday with a 7-5, 7-6 (5) win against Yannick Hanfmann of Germany.

Tiafoe, the fourth seed, needed one hour and 55 minutes to win the match, in which he saved all 11 break points on the grass courts.

In the quarterfinals, he'll take on sixth-seeded Jack Draper of Great Britain, a 6-4, 3-6, 6-3 winner over Marcos Giron.

Another quarterfinal will feature fifth-seeded Lorenzo Musetti of Italy, who rallied from a set down to defeat German Dominik Koepfer 6-7 (9), 7-6 (5), 6-3, against Alexander Bublik of Kazakhstan, the third seed. Bublik fired 18 aces on his way to beating Hamad Medjedovic 6-1, 7-6 (4) of Serbia.

Libema Open

No. 3 seed Ugo Humbert of France topped compatriot Arthur Fils 6-3, 7-6 (1) to move to the quarterfinal at 's-Hertogenbosch, Netherlands.

Fellow Frenchman Adrian Mannarino fell to Gijs Brouwer on the Netherlands, making him the second Dutchman to advance to the quarters. Joining him is sixth-seeded Tallon Griekspoor, who defeated Mackenzie McDonald 6-3, 7-6 (5).

The match between Russian Karen Khachanov, the fourth seed, and Aleksandar Vukic of Australia was suspended because of darkness. They were tied at one set each entering the third set.

--Field Level Media
Defending champion Frances Tiafoe moved to the quarterfinals of the Boss Open at Stuttgart, Germany, on Wednesday with a 7-5, 7-6 (5) win against Yannick Hanfmann of Germany.