Zverev was left wondering why he has been struggling to get into his matches
Images from Day 5 of the 2023 Australian Open at Melbourne Park on Friday.
World number one Novak Djokovic, bidding for a record-equalling sixth title at the event, is in the Tokyo group with Russian Daniil Medvedev, Germany's Alexander Zverev and Argentine first-time Diego Schwartzman.
Australian media said the charge was related to a complaint made by Kyrgios's former partner Chiara Passari.
Holder Stefanos Tsitsipas moved into the Monte Carlo Masters quarter-finals with a 7-5, 7-6(1) victory over Laslo Djere on Thursday while fourth seed Casper Ruud was knocked out in straight sets by Grigor Dimitrov.
Table-toppers Napoli, barely affected by injuries, have won five league matches in a row to extend their unbeaten run since the start of the season in both Serie A and the Champions League.
The ATP Finals, in its 50th edition, is being staged in London's O2 Arena for the 12th and last time before it moves to Turin and sadly plans for a vibrant farewell party in front of the usual sell-out crowds has been scuppered by the COVID-19 pandemic.
Andy Murray may have been the forgotten man at the US Open but gave the crowd and Stefanos Tsitsipas a match to remember, forcing the third seed to grind out a 2-6, 7-6(7), 3-6, 6-3, 6-4 win on Monday and avoid the opening round shocker.
World number one Novak Djokovic earned his 1,000th tour-level victory by beating Casper Ruud 6-4, 6-3 on Saturday to reach the Italian Open final.
Milan missed the chance to jump to second and remained fourth with 48 points
Nadal, bidding for a record-extending 14th French Open title, won the first five games of the match as he looked on course to repeat his drubbing of the Serb in last year's final.
Greece's Tsitsipas battled back from 3-5 down in the third set to eliminate Medvedev with a 6-3, 6-7(11), 7-6(1) win to set up a showdown on Friday with Rublev for the Red Group's other semi-final spot.
'The bubble makes it really tiring week by week'
Novak Djokovic beat Casper Ruud in the French Open final to win a men's record-extending 23rd Grand Slam title.
Inspired Garcia goes from Cincinnati qualifier to champion
Petra Kvitova overcame a sluggish start and 10 double faults to beat Madison Keys 6-7(6), 6-4, 6-3 on Saturday and advance to the final of the Cincinnati Open, where she will face Caroline Garcia, the first qualifier to reach the final of a WTA 1000 tournament.
World number one Carlos Alcaraz sailed into the Paris Masters third round with a 6-4, 6-4 win over Yoshihito Nishioka but Rafael Nadal and Daniil Medvedev both slumped to surprise losses on Wednesday.
A tap-in by Karim Benzema and a powerful strike by substitute Marco Asensio earned European champions Real Madrid a 2-0 win over 10-man Chelsea.
Djokovic did not drop a set en route to the final in Rome
Rafa Nadal returned from an injury layoff to beat Miomir Kecmanovic 6-1 7-6(4) on Wednesday
AC Milan entered the Champions League quarterfinals for the first time in eleven years, with a draw in the round of 16 second leg against Tottenham Hotspurs.
Holders Real Madrid breezed past Chelsea into the semi-finals of the Champions League with Rodrygo's double securing a 2-0 win at Stamford Bridge.
He was drawn in the toughest half of the draw with Nadal as well as in-form Spanish teenager Carlos Alcaraz and world number three Alexander Zverev, who could clash in the last eight.
'My arm has been -- I have had an issue there for quite a while now. It has gotten bigger in the last couple of weeks, so I'm just trying to protect it.'
Djokovic struggled to find his range early in the contest as Spaniard Davidovich Fokina raced to lead
Images from Day 10 of the 2022 Australian Open in Melbourne on Wednesday.
Russian Andrey Rublev has become the fifth singles player to qualify for the season-ending ATP Finals in Turin next month, the men's tour said.
Rafael Nadal's hopes of winning the year-ending ATP Finals for the first time live on after the Spaniard beat defending champion Stefanos Tsitsipas 6-4, 4-6, 6-2 on Thursday.
Sparks flew when they met for the first time on the ATP Tour in Miami, with Medvedev confronting the Greek over his on-court conduct.
Novak Djokovic secured a semi-final place at the ATP Finals with a 6-3, 6-2 victory over Russian Andrey Rublev on Wednesday, his 50th match win of the year, while Stefanos Tsitsipas withdrew from the tournament due to an elbow injury.
Madison Keys swept past Wimbledon champion Elena Rybakina 6-2, 6-4 at the Cincinnati Open on Friday, setting up a semi-final clash with Petra Kvitova after the Czech defeated Ajla Tomljanovic.
Barcelona clinched a 1-0 away win at Atletico Madrid, while AS Roma held AC Milan to a 2-2 draw.
Wimbledon debutant Eubanks ends Tsitsipas's challenge in fourth round.
Formula One and the championship-leading Red Bull team mourned the death of the energy drink company's Austrian founder Dietrich Mateschitz on Saturday at the age of 78.
Holger Rune crashed out to Yoshihito Nishioka in the ATP 250 Adelaide International 1 first round.
Daniil Medvedev was fined for an outburst against the umpire
Kyrgios added that he had been in communication with Tennis Australia chief executive Craig Tiley and United Cup tournament director Stephen Farrow about his injury.
Casper Ruud has become the first Norwegian to book a place in the season-ending ATP Finals, leaving one spot to be filled at the tournament in Turin, Italy later this month.
Serbia's Novak Djokovic outclasses Russia's Andrey Rublev to set up a meeting with unseeded Tommy Paul in the semi-finals of the Australian Open on Wednesday.