Houston Open: Wolf books spot in second round

American J.J. Wolf edged out Swiss qualifier Alexander Ritschard 6-3, 2-6, 6-4 to move into the second round of the Houston Open at River Oaks Country Club on Tuesday.

Wolf, ranked No 96, will face the winner of the match between American Marcos Giron, the No 7 seed, and Canadian wildcard Denis Shapovalov next.

Houston ATP 250, other first-round results (River Oaks Country Club, clay, USD 742.350, most recent results first):

• Jordan Thompson vs. Yibing Wu
• Marcos Giron vs. Denis Shapovalov
• Thanasi Kokkinakis vs. Aleksandar Kovacevic
• Gijs Brouwer vs. James Duckworth
• Alex Michelsen vs. Max Purcell
• Michael Mmoh vs. Juan Pablo Varillas
• Luciano Darderi vs. Denis Kudla
• Daniel Elahi Galan vs. Benoit Paire
• Rinky Hijikata beat Christopher Eubanks (5): 7-6 (4), 7-6 (2)
• Zizou Bergs beat Patrick Kypson (Q): 7-6 (5), 6-3
• Brandon Nakashima beat Duje Ajdukovic: 6-1, 6-4