Wozniacki, the finalist in 2009 and 2014 and semi-finalist also in 2010 and 2011, sympathised with Sevastova after she spent almost three months out of the sport with a right ankle injury earlier this year.
Mirza`s serve came under severe threat, facing three break points, and was broken in the first instance itself. Garcia then held her serve easily to be on level terms at 5-5.
Novak Djokovic one will face another Frenchman, Gael Monfils, for a place in Sunday`s championship match after the 10th seed pummelled compatriot Lucas Pouille 6-4, 6-3, 6-3.
Louis Armstrong`s moving `What a Wonderful World` serenaded fans Tuesday as the US Open bid farewell to the stadium named after the legendary jazz trumpeter before it confronts the wrecking ball next week.
She will face either two-time runner-up Caroline Wozniacki or shock quarter-finalist Anastasija Sevastova of Latvia.
It will be the third meeting between the two countries and first since 1965 with Spain leading 2-1.
"I couldn`t bend my knee too much in the last three days so I was handicapped a little bit," said Thiem.
Nearly two decades after winning her first Grand Slam match, through plenty of highs and lows, from championships to health scares, Serena Williams is still at it -- and still winning.
Nick Kyrgios and Bernard Tomic were Tuesday included in Australia`s Davis Cup team to face Slovakia in a must-win tie to secure their place in the World Group next year.
Dimitrov committed 43 unforced errors as Murray set up a last-eight clash with Japanese sixth seed Kei Nishikori, the 2014 runner-up who downed 37-year-old Ivo Karlovic 6-3, 6-4, 7-6 (7/4).
Seventh seeds Sania Mirza and her Czech partner Barbora Krejcikova defeated unseeded American-Japanese pair of Nicole Gibbs and Nao Hibino 6-4,7-5 in a third round match.
Serena Williams will face Simona Halep for a place in the semi-finals after the Romanian fifth seed dispatched Spain`s Carla Suarez Navarro 6-2, 7-5.
Venus Williams was philosophical about her failure to convert a match point against Pliskova`s serve in the 10th game of the third.
"I just gave everything I had," said Halep.
It has been a memorable Test match. It has been very good right from the second day onwards when New Zealand were batting really well and me and Ashwin were chatting that it is going to be an exciting Test.