Simona Halep had to dig deep for a come-from-behind win against Kaia Kanepi in the first round of the Australian Open.
It was a second straight first-round exit at Flushing Meadows for Romania's Simona Halep, who dropped her opening match to Maria Sharapova last year.
Monica Puig, seeded eighth in the event and ranked 48th in the world, outlasted 92nd-placed Watson 6-4, 6-4 in 94 minutes.
Others who have pulled off big upsets at this tournament were not able to follow up those victories. Steve Darcis, who defeated Rafael Nadal in the first round, withdrew from his second-round match because of a shoulder injury he sustained against Nadal. Sergiy Stakhovsky, who beat Roger Federer in the second round, lost in the next round, sayi...
Showing no drop-off after her dramatic victory over Williams, the 23rd-seeded German returned on Tuesday and made quick work of a much less intimidating opponent, 46th-ranked Kaia Kanepi
Fourth-seeded Radwanska, the highest seed left following the exit of defending champion Williams, Victoria Azarenka and Maria Sharapova, beat Li, the sixth seed, 7-6 (7/5), 4-6, 6-2.
Britain's dreams of a first woman in the Wimbledon quarter-finals for 29 years were shattered on Monday when Laura Robson bowed out in tears after falling to Estonia's Kaia Kanepi.
Angelique Kerber's Facebook page received a string of abusive messages including a death threat as well as one wanting her to break her arms while another demanded the tie be investigated for match-fixing.
Sania and Huber will now fight it out with Romania's Monica Niculescu and Czech Republic's Klara Zakopalova for a place in the semifinals.
Laura Robson was sent packing Monday by former world number one Caroline Wozniacki and Elena Baltacha won just three games Tuesday in losing to New Zealand's Marina Erakovic.
World No.2 Maria Sharapova is aiming to become just the third player, after Steffi Graf and Kim Clijsters to win back-to-back Indian Wells and Sony Open titles.
Poland's Radwanska is on an unmatched win run this year after claiming tournaments in Auckland and Sydney, and next faces one of two former world number ones, Ana Ivanovic or Jelana Jankovic.
Having waited 76 years for a men's Grand Slam champion and 24 years to celebrate a women's tour winner, Britain, once the cash-heavy, running joke of world tennis, is suddenly a serious player.
Maria Sharapova came back from one set down to beat Heather Watson 6-7 (9/7), 6-3, 6-4 in the second round of the Pan Pacific Open in Tokyo on Tuesday.
Top-seeded Caroline Wozniacki beat injury-plagued Kaia Kanepi 6-1, 6-0 Sunday to win the KDB Korea Open.
Two-time major champion Svetlana Kuznetsova and top-20 players Kaia Kanepi and Flavia Pennetta have pulled out of the U.S. Open.
Estonian tennis star Kaia Kanepi has been forced to pull out of the Baltic nation's Olympic team due to a heel injury that also sidelined her from Wimbledon.