NEW YORK (Reuters) - Highlights from day one of the U.S. Open tennis championships on Monday (all times GMT):
- Ninth seeded American Venus Williams beat Slovakian qualifier Viktoria Kuzmova 6-3 3-6 6-2 to reach the second round.
- Twice champion Venus preserved her personal record of never losing in the opening round of the U.S. Open in 19 appearances.
- American Sloane Stephens reached the second round with a 7-5 6-1 win over 2015 finalist Roberta Vinci of Italy.
- Canadian Denis Shapovalov beat Russian Daniil Medvedev 7-5 6-1 6-2 in the first round to claim his first ever grand slam main draw win.
- Serbian Aleksandra Krunic fought back from a set down to clinch a 4-6 6-3 6-4 victory over seventh seeded Briton Johanna Konta.
- Wimbledon semi-finalist Konta struggled to find her touch for the majority of the match, landing only 45 percent of her first-serves. She also finished with a disappointing tally of 42 unforced errors.
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- Big-serving American John Isner fired 22 aces on his way to a 6-1 6-3 4-6 6-3 first-round victory over France’s Pierre-Hugues Herbert.
- Isner will meet South Korean Chung Hyeon in the second round.
- Fifth seed Croatian Marin Cilic beat American Tennys Sandgren 6-4 6-3 3-6 6-3.
- Cilic, the 2014 winner, recorded 55 winners and 57 unforced errors to seal a victory after two hours and 47 minutes.
- Eighth seed Jo-Wilfried Tsonga produced 38 winners to claim a 6-3 6-3 6-4 first-round victory over Romania’s Marius Copil.
- The 32-year-old Tsonga has struggled at the last two grand slam events, losing in the first round at Roland Garros before a third round exit at Wimbledon.
- Kazakh qualifier Mikhail Kukushkin beat twice semi-finalist and 21st seed David Ferrer 4-6 6-3 6-2 6-1.
- American Sofia Kenin upsets 32nd seed Lauren Davis 7-5 7-5.
- The 18-year-old wildcard reached the second round of a grand slam for the first time in her career.
- Petra Kvitova beat Serbian Jelena Jankovic 7-5 7-5 to reach the second round.
- The 13th seeded Czech has reached the second round of all three grand slams she has played since returning to action in May, following a lengthy injury layoff.
- Third-seeded Spaniard Garbine Muguruza beat American Varvara Lepchenko 6-0 6-3 to reach the second round.
Compiled by Hardik Vyas and Aditi Prakash in Bengaluru, editing by Ed Osmond and Pritha Sarkar