Home WTA Halep rallies to book last-eight spot as Mladenovic and Bouchard exit Citi Open Simona Halep rallied from a set down to prevail 3-6 6-4 6-2 against Mariana Duque-Marino at the Citi Open in Washington. Sacha Pisani 04 August, 2017 12:16 IST Romanian star Simona Halep - Getty Images Sacha Pisani 04 August, 2017 12:16 IST Top seed Simona Halep survived to advance to the WTA Citi Open quarterfinals but Kristina Mladenovic and Eugenie Bouchard crashed out.Halep rallied from a set down to prevail 3-6, 6-4, 6-2 against Mariana Duque-Marino in Washington on Thursday.In sweltering conditions in DC, world number two Halep – who will meet seventh seed Ekaterina Makarova in the last eight – was forced to dig deep in a see-sawing contest lasting one hour, 40 minutes.French second seed Mladenovic was not so fortunate, stunned 6-2, 6-3 by teenager Bianca Andreescu.Mladenovic was broken five times and tallied 10 double faults as she sensationally exited the WTA Tour tournament.Bouchard's campaign also came to an end after she lost 6-2, 4-6, 6-0 to Andrea Petkovic.Monica Niculescu trumped Patricia Maria Tig 6-4, 7-6 (7-2), while Sabine Lisicki overcame Aryna Sabalenka 4-6, 6-3, 6-3. Read more stories on WTA. For more updates, follow Sportstar on :