Houston Open: Walton moves into second round

Australian Adam Walton advanced to the second round of the Houston Open by defeating American wildcard Michael Mmoh 6-3, 7-6 (5) at River Oaks Country Club on Tuesday.

Walton, ranked No 85, will face second seed Frances Tiafoe next.

Houston ATP 250, other first-round results (River Oaks Country Club, clay, USD 680.140, most recent results first):

• Kei Nishikori vs. Mitchell Krueger
• Rinky Hijikata vs. Christopher Eubanks
• Colton Smith vs. James Duckworth
• Ethan Quinn vs. Jordan Thompson
• Daniel Elahi Galan vs. Mackenzie McDonald: tuesday
• Adrian Mannarino (LL) beat Yannick Hanfmann: 7-6 (5), 6-3
• Aleksandar Kovacevic beat Tomas Martin Etcheverry (7): 6-3, 6-4
• Corentin Denolly (Q) beat Brandon Holt: 7-6 (7), 7-6 (8)
• Alex Michelsen (5) beat Learner Tien: 6-4, 6-2
• Jenson Brooksby (Q) beat Taro Daniel: 6-4, 6-4
• Cristian Garin (WC) beat Alexander Ritschard: 6-3, 6-4