US Clay Court Championships: Kudla makes second round

American Denis Kudla edged out Australian qualifier Aleksandar Vukic 6-4, 4-6, 6-4 to reach the second round of the US Clay Court Championships at River Oaks Country Club in Houston on Monday.

Kudla, ranked No 137, will play the winner of the match between Australian Jordan Thompson and American J.J. Wolf, the No 5 seed, next.

Houston ATP250, other first-round results (River Oaks Country Club, clay, USD 642.735, most recent results first):

• Max Purcell vs. Daniel Altmaier
• Tomas Machac vs. Jack Sock
• Marcos Giron vs. Emilio Gomez
• Hugo Dellien vs. Cristian Garin
• Tomas Martin Etcheverry vs. Juan Manuel Cerundolo
• Yannick Hanfmann vs. Yosuke Watanuki
• Jordan Thompson vs. J.J. Wolf
• Steve Johnson vs. Facundo Bagnis
• Fernando Verdasco vs. Jason Kubler
• Aleksandar Kovacevic vs. Gijs Brouwer: monday
• Daniel Elahi Galan beat Zhizhen Zhang: 6-2, 6-3