Stanislas Wawrinka has won his first-round match at the US Open. On Wednesday evening the 25th seed beat Mikhail Kukushkin from Kazakhstan, 6-3, 6-2, 6-2.

After the first round at the $22.7 million (SFr23 million) tournament at Flushing Meadows four of six Swiss tennis players remain.

Wawrinka’s victory bodes well for Switzerland’s male players, who travel to Kazakhstan on September 17-19 to try to keep their spot in the top tier of the Davis Cup.

Also on Wednesday Marco Chiudinelli (ATP 63) defeated local wild card Jack Sock 6-1, 6-4, 1-6, 6-1.

Earlier in the week five-time champion Roger Federer sailed through his opening match and faces Andreas Beck from Germany on Thursday afternoon, local time.

Of the three Swiss women playing in New York – all unseeded – only Patty Schnyder made it to the second round, beating Kirsten Flipkens from Belgium 6-1 6-3.

Timea Bacsinszky lost a close match to 21st seed Zheng Jie of China 7-6, 7-6. Stefanie Vögele was beaten by Dominika Cibulkova from Slovakia 6-2, 4-6, 7-5.

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