NEW YORK, August 29 (Reuters) - Highlights from day one of the U.S. Open tennis championships on Monday (all times GMT): 0300 CIBUKKOVA SURVIVES CEPELOVA SCARE - Slovakia's Dominika Cibulkova, the women's 11th seed, had a slow start against unseeded compatriot Jana Cepelova, losing the first set in a tiebreak, but fought back to win the match 6-7(5) 6-3 6-2. 0250 SHARAPOVA STORMS PAST HALEP - Maria Sharapova marked her return to grand slam action with a 6-4 4-6 6-3 first-round victory over second seed Simona Halep in a match that lasted 2 hours and 42 minutes. - Sharapova extended her head-to-head advantage over world number two Halep to 7-0. - The 30-year-old Russian, who returned from a 15-month doping ban in April, recorded her first victory over a top 10 player since beating Petra Kvitova in the Fed Cup final in November 2015. 0016 WOZNIACKI MARCHES INTO ROUND TWO - Fifth seed Caroline Wozniacki kicked off her campaign with a 6-1 7-5 first-round victory over Mihaela Buzarnescu of Romania. - Two-times runner-up Wozniacki aims to go one better on her 11th appearance at the Flushing Meadows. 2235 QUERREY EASES PAST SIMON - American Sam Querrey booked a place in the second round with a 6-4 6-3 6-4 victory over France's Gilles Simon. - Querrey, who reached his first grand slam semi-final at Wimbledon earlier this year, registered 31 winners and claimed 20 off 27 points at the net on his way to victory. 2215 MULLER KNOCKS OUT TOMIC - Wimbledon quarter-finalist Gilles Muller fired 27 aces on his way to a 3-6 6-3 6-4 6-4 first-round victory over Australian Bernanrd Tomic. 2150 HOME FAVOURITE VENUS SURVIVES KUZMOVA SCARE - 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. 2125 STEPHENS EASES PAST VINCI - American Sloane Stephens reached the second round with a 7-5 6-1 win over 2015 finalist Roberta Vinci of Italy. 2105 SHAPOVALOV OFF TO FLYING START - 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. 2015 KRUNIC STUNS KONTA - 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. 1945 AMERICAN ISNER THROUGH - 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. 1940 CILIC ADVANCES TO ROUND TWO - 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. 1930 TSONGA STORMS PAST COPIL - 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. 1910 KUKUSHKIN KNOCKS OUT FERRER - Kazakh qualifier Mikhail Kukushkin beat twice semi-finalist and 21st seed David Ferrer 4-6 6-3 6-2 6-1. 1820 AMERICAN WILDCARD KENIN UPSETS DAVIS - American Sofia Kenin upsets 32nd seed Lauren Davis 7-5 7-5. - The 18-year-old wild card reached the second round of a grand slam for the first time in her career. 1647 KVITOVA BATTLES PAST JANKOVIC - 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. 1620 MUGURUZA EASES PAST LEPCHENKO - Third-seeded Spaniard Garbine Muguruza beat American Varvara Lepchenko 6-0 6-3 to reach the second round. 1515 PLAY BEGINS AT FLUSHING MEADOWS
