Dallas Open: Giron into quarter-finals, Fritz next

American Marcos Giron, the No 7 seed, beat German Oscar Otte 6-4, 6-3 to move into the quarter-finals of the Dallas Open at the Styslinger/Altec Tennis Complex on Friday night.

Giron, ranked No 55, will play top seed Taylor Fritz next.

The American won against qualifier Alex Rybakov (6-4, 6-7 (1), 6-1) in the previous round of the Dallas tournament.

Otte, ranked No 80, defeated American Christopher Eubanks (6-4, 4-6, 6-2).

Dallas ATP250, other second-round results (Styslinger/Altec Tennis Complex, hard, USD 737.170, most recent results first):

• Taylor Fritz beat Jack Sock (WC): 7-6 (5), 6-4
• John Isner (5) beat Daniel Altmaier: 6-3, 7-6 (1)
• Adrian Mannarino (8) beat Jordan Thompson: 6-2, 7-6 (3)
• Emilio Gomez beat Miomir Kecmanovic (4): 2-6, 7-6 (4), 6-4
• Yibing Wu beat Denis Shapovalov (3): 7-6 (1), 6-4
• Frances Tiafoe (2) beat Mackenzie McDonald: 6-1, 6-3
• J.J. Wolf (6) beat Radu Albot: 6-3, 7-6 (5)