NEW HAVEN, Connecticut — Agnieszka Radwanska breezed into the second round of the Connecticut Open with a 6-0, 6-2 victory over American CoCo Vandeweghe Monday at Connecticut Tennis Center. The Krakow, Poland, native needed only 65 minutes to set up a second-round meeting with France's Aliza Cornet, who advanced with a three-set win against Yulia Putintseva of Kazakhstan. “I just started very well,” said Radwanska, who wore a Lotto Women's Lux Diamond Dress that resembled a disco ball and sparkled under the Stadium Court lights at night. Among the other top players to advance were 20-year-old American Madison Keys and sixth-ranked Lucie Safarova of the Czech Republic. Eighth-ranked Karolina Pliskova, also from the Czech Republic, survived a scare from Slovakia's Polona Hercog before advancing with a 2-6, 7-6 (7-5), 6-2 victory. Keys, who is the top ranked American player behind Serena Williams at 19th, started off sloppy and dropped her first four games against Ukraine's Elina Svitolina. After fighting back to win the set 7-6 (7-4), Keys went in front 4-2 in the second set before Svitolina retired with a lower back injury. Next up for Keys is fourth-ranked Petra Kvitova, who is the top remaining seed at No. 2 after American Simona Halep withdrew Sunday due to injury. Safarova had a little easier time beating Russian Daria Gavrilova 6-3, 6-4 in the final afternoon match. Also Monday, Canadian Eugenie Bouchard lost to Italy's Roberta Vinci 6-1, 6-0. France's Kristina Mladenovic knocked off eighth-seeded Sara Errani of Italy, 6-2, 4-6, 6-4. Slovakia's Magdalena Rybarikova, Ukraine's Olga Savchuk and France's Caroline Garcia also advanced to the second round. Rosol wins opener Defending champion Lukas Rosol of the Czech Republic opened with a 6-4, 7-6 (4) victory Monday over Latvia's Ernests Gulbis in the first round of the Winston-Salem Open. The 6-foot-5 Rosol served 14 aces and took advantage of a break point in the seventh game of the first set to improve to 3-1 all-time against Gulbis, and 2-1 this year, in the final tournament before next week's US Open. Rosol, who was ranked as high as 26th in the world in 2014 before slipping to his current No. 86 spot, will face Poland's Jerzy Janowicz Tuesday in a rematch of last year's Winston-Salem Open final. In other matches at the Wake Forest Tennis Center, which had a 2-hour, 15-minute rain delay, 19-year-old Thanasi Kokkinakis of Australia upset Ukraine's Alexandr Dolgopolov 7-6 (1), 7-6 (5). Also Monday, 17-year-old qualifier Frances Tiafoe overcame 30 aces by Australia's James Duckworth to win 3-6, 7-6 (4), 7-6 (3), and 37-year-old Tommy Haas of Germany lost to Spain's Pablo Carreno Busta 6-3, 6-4. Uzbekistan's Denis Istomin downed Donald Young of the US 6-3, 6-3. Tiafoe, who will play Brazil's Thomaz Bellucci in the second round Tuesday, became the youngest American to win his first ATP World Tour match since then-15-year-old Ryan Harrison won in Houston, Texas, in April 2008. — Agencies