Defending champion Sloane Stephens was sent packing from the Miami Open on Sunday after a 6-3, 6-2 loss to Germany's Tatjana Maria in the third round.
Czech Lucie Safarova took the final qualifying spot for the end-of-season WTA Finals after Spain's Carla Suarez Navarro was knocked out of the Kremlin Cup quarter-finals on Thursday.
Williams posted pictures on her Instagram page and wrote: Caption this (MUST SWIPE RIGHT).
The 36-year-old has been practising hard on the grass and few would bet against her becoming the first mother to win the title since Evonne Cawley 38 years ago.
If Williams is indeed 20 weeks into her term, that would mean she was approximately two months pregnant when she captured her record 23rd Grand Slam tournament singles title at the Australian Open in January.
World number ones Serena Williams, aiming to complete the first calendar-year Grand Slam in 27 years, and Novak Djokovic have been named the top seeds for the US Open championships starting on Monday in New York.
'Take care of yourself and see you back winning soon!'
10 Interesting Glimpses from the French Open.
Lewis Hamilton celebrated his 50th Formula One victory on Sunday with a pole-to-flag U.S. Grand Prix drive that kept his title hopes alive and trimmed Mercedes team mate Nico Rosberg's lead to 26 points with three races remaining. Rosberg, who had been chasing his 10th triumph of the season, finished second on a sunny Texan afternoon with a big crowd but little drama -- even if Hamilton spent much of it worrying about reliability. The straightforward victory was Hamilton's fourth in Texas in five seasons and ended a barren stretch for the triple world champion dating back to his last win in Germany in July.
With five of the top 10 in the current rankings aged 28 or older, form suggests another pair of seasoned campaigners could contest the title match at the French Open, which starts in Paris on Sunday.
'I played a good match, maybe he was a little bit tired from New York (where) he played an amazing tournament.'
Maria Sharapova's mix of grit and power were enough to see off American teenager Sofia Kenin 7-5, 6-2 in the third round of the US Open on Friday.
Nadal set to face Kyrgios clash in second round
Serena Williams said it was a 'great feeling' to surpass Steffi Graf as the most prolific grand slam champion of the open era at the Australian Open on Saturday and was not prepared to put a number on the haul of titles she might end up with.
The lanky wild card kissed the Montreal court after completing a rousing 3-6, 6-4, 7-6(4) triumph as the 18-year-old became the youngest player to ever reach the quarter-finals of an ATP Masters 1000 event.
Pune Marathas made a remarkable recovery from 0-2 down to win their next three matches in a row as their contest against Bangalore Raptors ended in a thrilling tie to run away with a bonus point in the Champions Tennis League on Thursday.
Images from Day 3 of the Australian Open in Melbourne on Wednesday.
PHOTOS from day three of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Wednesday.
Sloane Stephens watched January's Australian Open from her couch, a large cast on her left foot rendering her immobile and raising questions in her mind about her ability to bounce back from the injury.
The 26-year-old first reached the top last October but lost the spot 16 weeks later having not hoisted a Grand Slam trophy.
Maria Sharapova withdrew from the Rogers Cup with a sore left arm on Thursday, putting the five-time grand slam champion's US Open participation in doubt.
Four-time Grand Slam champion Naomi Osaka's name appeared on the singles entry list for Wimbledon released by the organisers on Friday but veterans Roger Federer and the Williams sisters were not included.
The first week of Wimbledon is over and the tournament has been full of surprises. The grudge match between Nick Kyrgios and Rafael Nadal and the rise of the phenom that is Cori 'Coco' Gauff have been the shining moments at this year's tournament.
'It's sad that I'm here protesting the same thing that she did 50-plus years ago'
A Champagne cork popped somewhere on Centre Court four games into Serena Williams's Wimbledon semi-final and while it was a tad premature, her 6-2 6-0 thrashing of Elena Vesnina suggested she could celebrating something special come Saturday. The top-seeded American will be taking nothing for granted, having seen her bid to match Steffi Graf's modern era record of grand slam titles stuck one short on 21 for a year, but it was a menacing show of strength, albeit against an overawed opponent.
It's French Open time! The tennis world's only clay court Grand Slam begins on Sunday and the best of the best will battle it out.
Serena and Venus Williams usually get top billing at the Miami Open but this year there is another sister act vying for thespotlight with world number one Naomi Osaka showing older sibling Mari the ropes.
Six-time champion Novak Djokovic's hopes of turning around his season at the Miami Open ended in the second round when he was defeated 6-3, 6-4 by Frenchman Benoit Paire.
The American great came into what is expected to be her final tournament as a 50-1 long-shot to win the title but after upsetting world number two Anett Kontaveit on Wednesday she is now 14-1
American teenage sensation Coco Gauff progressed to her maiden WTA final as she eased past Germany's Andrea Petkovic 6-4, 6-4 at the Linz Open on Saturday. The 15-year-old Gauff became the youngest player to reach a WTA final since Czech Republic's Nicole Vaidisova won the Tashkent Open in 2004, also aged 15.
Rediff.com gives you a quick flashback, in pictures of the month gone by...
The 19-year-old's triumph, which came in her US Open main draw debut and against the undisputed queen of the sport, was the latest step in a meteoric rise for Andreescu and it dominated front pages across the country.
'Wow. Will Smith just smacked the s**t out of me.' 'Keep my wife's name out of your f**king mouth!'
In an exciting back-and-forth rubber lasting three hours 45 minutes, Siniakova held off the 19-year-old Fed Cup debutante to give the Czechs a 3-0 win in the final against a United States team who were the defending champions but were missing their top players.
Could French Open champion Jelena Ostapenko serve up another shock at Wimbledon this year? Or will world number one Angelique Kerber get her season back on track at Wimbledon?
Kevin Anderson spoiled the American party at the US Open when the big-serving South African beat local favourite Sam Querrey 7-6(5), 6-7(9), 6-3, 7-6(7) to reach his first Grand Slam semi-final on Tuesday.
Images from Day 1 of the Australian Open, in Melbourne, on Monday.
Summary of sports events and persons who made news on Monday
Images from Day 5 of the US Open in New York on Friday
Images from Day 2 of the Wimbledon tennis championships in London, on Tuesday.