Images from the FIFA World Cup Group F match between Belgium and Morocco on Sunday.
Some players and pundits have criticised the rule as being hard to police, spottily enforced and highly subjective, and called for the ban on coaching from the players' box to be lifted.
The caricature of an angry Williams -- with exaggerated lips and tongue and a wild plume of curly hair rising above her head as she stomped on her tennis racket -- was condemned as racist by civil rights leaders, celebrities and fans.
Issues of sexism, officiating double standards and adverse playing conditions have dominated the 50th anniversary of the U.S. Open, raising uncomfortable questions and prompting authorities to promise a review of existing policies.
Serena Williams said she did not know her coach was giving her instructions and had "never cheated in her life" after her hopes of winning a 24th Grand Slam title ended in extraordinary scenes at the US Open on Saturday.
Naomi Osaka defeated Serena Williams 6-2, 6-4 in a dramatic women's singles final at the US Open to claim her first career Grand Slam title on Saturday.
Serena Williams has been fined $17,000 (13,156) for the code violations she received during the US Open final, the United States Tennis Association (USTA) said on Sunday.
US Open champion Naomi Osaka grew up dreaming of competing against Serena Williams in a Grand Slam final but never would have dared to go as far as to think her idol would be reduced to tears in a drama-filled match.
Serena 'out of line' but both sides share blame says King
A clash of generations will decide the US Open on Saturday with Serena Williams taking a fourth crack at Grand Slam history against teenager Bianca Andreescu, who was not even born when the American lifted her first Flushing Meadows trophy.
It will be the 22nd career match-up between the two long-time rivals, who somehow have avoided each other at the US Open throughout their long careers.
While Medvedev said he was "lucky" he felt better and could continue his match to advance, Spain's Paula Badosa gave up.
Serena confirmed her entry to the tournament she won for a seventh time on her last appearance in 2017.
The ruthless American needed less than an hour to defeat Sharapova 6-1, 6-1 and notch her 19th consecutive win over the Russian in what some charitably dub a "rivalry."
Simone Bolelli and Fabio Fognini became the first all Italian pair to win a grand slam men's doubles title in almost 60 years when they beat Frenchmen Pierre-Hughes Herbert and Nicolas Mahut 6-4 6-4 at the Australian Open on Saturday.
US Open champion Naomi Osaka fought back tears and rallied from a set down to outlast Zhang Shuai 3-6, 6-4, 7-5 in the China Open quarter-finals on Friday.
The cartoon has been blasted by numerous athletes, celebrities, journalists and activists
Australian newspaper defies criticism, reprints Serena Williams cartoon
Awesome images from the world of Sport 2018.
Naomi Osaka trying to move on from 'bittersweet' maiden Grand Slam title
Twitter lit up with reactions after Naomi Osaka defeated the American in a stormy final on Saturday:
'Ms Williams has had multiple on-court implosions in the past and got penalised for them, too.' 'She cried sexism this time perhaps because she knew the atmosphere was ripe for it,' notes Shuma Raha.
"For me, right now I have this feeling of sadness," said Osaka.
Her coach Patrick Mouratoglou believes she is now ready to matching Margaret Court's all-time record of 24 Grand Slams.
The United States Tennis Association (USTA) said on Sunday it would undertake a review of its communication policies after a string of umpiring controversies at the U.S. Open.
The eight seeded South African fought back after losing the first two sets to defeat the Swiss ace 2-6, 6-7(5), 7-5, 6-4, 13-11.
One year after shaking off a crippling foot injury to claim a stunning US Open victory, Sloane Stephens said her follow-up season felt just as good as the American prepares to play in next week's WTA Finals for the first time.
'For me, I don't feel sad because I wouldn't even know what I'm expected to feel'
There was not an ounce of bitterness as Osaka accepted the Daphne Akhurst Memorial Cup from Asia's first Grand Slam champion Li Na
Coach Patrick Mouratoglou claimed Serena Williams' fitness had since gone up a notch and Margaret Court's all-time record of 24 Grand Slam singles titles may well be in peril at the Australian Open.
A summary of sports events and persons who made news on Tuesday.
Benoit Paire made a remarkable Davis Cup debut for France, outplaying Pablo Carreno-Busta 7-5, 6-1, 6-0 in the opening rubber of the World Group semi-final tie against Spain at the Stade Pierre-Mauroy on Friday.
Australian Nick Kyrgios did his best to enliven a damp and dismal Parisian day with some eye-catching play and colourful language as the French Open began without part of the usual furniture on Sunday.
IMAGES from the Australian Open matches played on Thursday
Serena Williams and Naomi Osaka advanced to the Rogers Cup quarter-finals on Thursday to set up their first meeting since the American's infamous row with an umpire overshadowed last year's US Open final.
Serena Williams' behaviour in Saturday's US Open final divided the tennis world after she called the chair umpire a "liar" and a "thief" and said he treated her differently than male players during her loss to Naomi Osaka.
Serena Williams squandered four match points and blew a 5-1 lead in the decider to fall to seventh seed Karolina Pliskova 6-4 4-6 7-5 in the quarter-finals of the Australian Open.
IMAGES from the Australian Open on Tuesday.
Serbian Djokovic, 31, needed elbow surgery in February to cure a problem that surfaced in 2017, but after some jarring defeats he returned to the kind of domination he achieved in 2015, winning Wimbledon and the US Open.