China's Zhu Lin, who outlasted Venus Williams 3-6, 6-2, 7-5 in a rain-hit match that ran two hours and 23 minutes.
Naomi Osaka beat Jennifer Brady to win her second Australian Open title and fourth Grand Slam crown, extending her win streak to 21 matches.
Factbox on Japan's Naomi Osaka, who beat Victoria Azarenka of Belarus 1-6, 6-3, 6-3 to win the US Open title on Saturday.
Other nominees for the prize are Angelique Kerber (Germany), Petra Kvitova (Czech Republic and Caroline Wozniacki (Denmark).
World Number one Simona Halep and Japan's Naomi Osaka are among the players nominated for the Women's Tennis Association (WTA) Player of the Year award.
The German sixth seed, who has not won a title since winning at Flushing Meadows last year, never got into the match against the 2016 WTA newcomer of the year.
Images from Day 2 at the US Open played at Flushing Meadows in New York on Tuesday
Mirza's gutsy image has helped her equal Nehwal's endorsement fee.