Patty Schnyder admitted that she found it difficult to read Sania's game during their quarterfinal at Cincinnati.
The Indian ace was beaten by the top seeded Swiss girl 6-7(7), 5-7 in the quarter-finals.
She will face the Serbian in the first round of Cincinnati Open in Ohio on Monday.
The ex-world number one is confident she can again become a dominating force on the WTA Tour.
A six-time champion at Flushing Meadows, Williams was once money in the bank when it came to the US Open
Both players burn with heaps of motivation to hoist the winner's trophy at Arthur Ashe Stadium in the last grand moment of the 2015 slam season.
Men's top seed Novak Djokovic and women's number two Angelique Kerber look to book berths in the last four of the US Open as the quarter-finals of the year's last Grand Slam get underway on Tuesday.
Sania Mirza and Yuliana Fedak ousted Sybille Bammer and Jewel Peterson 5-7, 6-2, 6-0 in the first round at Cincinnati
The world No. 1 suffered his first defeat before a final for 14 months in the second round of the Cincinnati Masters.
While the year's final grand slam is just underway tennis fans have circled Sept. 8 when, if all goes to form, Nadal and Federer would meet to decide a place in the final.
The top seed edged a 7-6, 7-5 victory over American James Blake in the first round of the Cincinnati Masters.\n
The Indian ace went down 2-6, 6-4, 4-6 to Japan's Akiko Morigami in the third round.
They lost to top seeded pair of Kveta Peschke and Maria Emilia Salermi in Cincinnati.
The Indian teenager will take on seventh seed Anna-Lena Groenefeld at the USD 170,000 Cincinnati Open.
Four times now, twice at Wimbledon (2018, 2019) and at the US Open (2018, 2019) Serena Williams has come agonizingly close to that 24th Grand Slam only to fall at the final hurdle.
The 26-year-old has not always handled the expectations placed on his shoulders after he won the Wimbledon junior title in 2008 with a game style uncannily like Federer's.
Rohan Bopanna and his Romanian partner Florin Mergea on Saturday made it to the final of the men's doubles event at the ATP World Tour Finals, in London, after registering a straight-set victory against Croatian Ivan Dodig and Marcelo Melo of Brazil.
Otto Warmbier, a University of Virginia student, sentenced to hard labour in prison for 15 years for stealing a political poster from a restricted floor in his hotel.
Andre Agassi served up his traditional late-night feast at the U.S. Open on Monday, beating fellow American Robby Ginepri to move into the second round.
Former world number one Maria Sharapova avenged her US Open loss to Anastasija Sevastova with a 7-6(3), 5-7, 7-6(7) victory over the Latvian in the China Open first round on Saturday.
Top seed Lindsay Davenport had little difficulty advancing to the semi-finals at the Cincinnati Open on Friday.
The Australian registered a 6-4, 6-4 victory over Marat Safin in the quarter-finals of the Cincinnati Masters.
The Indian pair went down to Mark Knowles of Bahamas and Daniel Nestor of Canada at the ATP Tennis Masters in Cincinnati.
The Indian ace, who broke into the top-50 this week, is suffering from a stomach pull
Neha and Shikha lost in the final qualifying round of the women's doubles in the WTA tournament in Cincinnati.
The good folks at National Geographic list out the most popular dishes that are as popular as the cities where they were invented.
Russian Daria Kasatkina will replace Sharapova in the main draw
