Mihaela Buzarnescu, who just a year ago was No. 142 in the world, will rise to 20th when the updated rankings are released on Monday.
It took a remarkable comeback by the 2014 champion Svetlana Kuznetsova to win an 11th consecutive match in the US capital and secure her 18th career title.
Alexander Zverev became the first man in nearly a decade to win consecutive titles at Washington's hard-court tuneup for the US Open.
Serena Williams has pulled out of next week's Rogers Cup hard-court tournament, citing personal reasons.
The International Tennis Federation is confident the new plans will deliver long-term benefits to players, nations and sponsors.
Unseeded German Andrea Petkovic reached the Citi Open semi-finals for the second consecutive year, beating sixth seed Belinda Bencic 6-3 2-6 7-6(8) on Friday.
Venus Williams has not advanced past the third round of a tournament since March and has yet to find the form that helped her reach two Grand Slam finals in 2017.
The International Tennis Federation (ITF) had been hoping its proposal to transform the 118-year-old men's competition into an 18-team season finale would be given the green light at its Aug. 13 to 16 AGM in Orlando, Florida.
Alexander Zverev bounced back after dropping the opening set to overhaul the seventh-seeded Japanese 3-6 6-1 6-4, eliminating him from the tournament for the second consecutive year.
Andy Murray also announced his withdrawal from next week's Rogers Cup in Toronto. He was to have met Australian Alex de Minaur in the Washington quarter-finals on Friday.
Andy Murray dug-deep to beat 93rd-ranked Marius Copil of Romania 6-7 (5), 6-3, 7-6 (4) to reach Citi Open quarters.
Venus Williams found her winning form late and charged to a 6-4 4-6 6-0 win over Britain's Heather Watson at the Silicon Valley Classic.
Alexander and Mishca had met twice before in qualifying matches, most recently in 2014, but never during the main rounds of a tournament.
Frenchman Benoit Paire was fined for smashing three rackets, worth at least £200, in his first round defeat against Marcos Baghdatis in Washington.
Roger Federer returns to court in Cincinnati after taking a long break. His last appearance on court was in the quarters of Wimbledon where he lost to Kevin Anderson.
Andy Murray is a three-time major champion and former No. 1 who was sidelined for 11 months because of his right hip.
The 29-year-old Donald Young went through the match without losing serve and will next face Japan's Kei Nishikori.
Officer James Frascatore was part of an undercover operation targeting credit card fraud and mistakenly thought Blake was one of the suspects.
Andy Murray, who played three matches in late June but withdrew from Wimbledon as it came too early in his recovery process, made his return to hardcourt tennis on Monday.
Serena Williams fell 6-1 6-0 to Britain's Johanna Konta in the first round of the Silicon Valley Classic.
On the mud, he is Virat Kohli plus, as one of the many songs on him extol. As Jaskanwar Singh Gill returns from an international championship in Turkey after he was told to remove his patka, The Indian Express captures Gill's struggle to move to the mat, and why he is still the one and only ‘Jassa Patti’