Azarenka was playing against Yulia Putinseva at Hard Rock Stadium in Miami on Tuesday, when the technical issue occurred in the match's opening set. Azarenka was barely losing at the time.
In a post on Instagram , Murray wrote: 'Yesterday towards the end of my match in Miami I suffered a full rupture of my ATFL and near full thickness rupture of my CFL.
MATTHEW LAMBERT: Not even the arrival of her boyfriend Alex de Minaur - high-tailing it over in record time after winning his third-round match - could turn things around for the Brit.
MATTHEW LAMBERT: The 36-year-old has effectively confirmed this will be his last year on tour and was visibly moved as he left the court at an event he has won twice.
KIERAN GILL: Murray was left face down in distress on Butch Buchholz Court after hurting himself at the precise moment he had made it 5-5 in the final set.
HENRY CLARK: Last month Britain's No 1 saw off the Brazilian world No 13 on her way to winning the San Diego Open, the first WTA 500 title of her career.
Aryna Sabalenka was overcome with emotion after she was dumped out of the Miami Open by Ukraine's Anhelina Kalinina - just days after the death of her ex-boyfriend.
Murray screamed in delight, punched the air and high-fived his team before consoling his opponent at the net. It was the first time since last August that he had won back-to-back matches
Sabalenka returned to the tennis court after Konstantin Koltsov had died on Monday, in what police described as an apparent suicide in what was an emotional occasion.
Paula Badosa paid tribute to Aryna Sabalenka after the world No 2 made an emotional return to the court following the death of her ex-boyfriend - and then beat her 'best friend' in straight sets.
On the eve of Sabalenka's opener, Miami-Dade Police confirmed Tuesday that Koltsov had died at the age of 42 in an 'apparent suicide' after jumping from a hotel balcony in Miami.
Sabalenka, 25, is set to open her account at the tournament just four days after her ex-boyfriend Konstantin Koltsov, 42, died in an 'apparent suicide' after jumping from a hotel balcony in Miami.
The couple are currently competing at the Miami Open, with the British No 1 having booked her place in the third round of the tournament after her opponent Brenda Fruhvirtova retired.
Aryna Sabalenka and Paula Badosa will face off at the Miami Open, with Badosa admitting it will be 'uncomfortable' to play her after such a tragedy. Here is everything you need to know about their friendship
The former world number one pulled off an impressive comeback victory to reach the second round of the Miami Open before writing on the courtside camera.
After claiming the first set 6-4, the Italian, who is ranked 142nd in the world, appeared to walk to the baseline to fire a serve at his British opponent.
Ahead of her Round of 64 match against her best friend, Spain's Paula Badosa, on Friday, Sabalenka took to court to work on her forehand and serve Wednesday afternoon.
Miami Police has taken over the investigation into the apparent suicide, but in an interview in her native Belarus, Mikhailova has seemingly shed fresh light on the episode.
Content to share the strength of their bond with followers on social media sites and in interviews, the Australian Open winner's fans felt privy to the love she held for her boyfriend, and vice versa.
Injuries are not a new thing for Raducanu. She was beset by injuries on the junior circuit, some serious but more often niggles that wouldn't go away, and that has carried on onto the pro tour.
French tennis player Arthur Cazaux has given fans an update on his condition after he collapsed midway through his match at the Miami Open on Monday in terrifying scenes.
Police have confirmed that Koltsov, who had been dating Australian Open champion Sabalenka, 25, for three years, 'died of suicide' at the age of 42 on Monday after jumping from a hotel balcony in Miami.
Kolstov died from an apparent suicide at the age of 42 Monday in Florida, after being believed to have joined his tennis star girlfriend as she prepared for the Miami Open.
Konstantin Koltsov, the boyfriend of tennis world No 2 Aryna Sabalenka, 'died of suicide' on Monday evening after jumping from a hotel balcony in Miami, police have confirmed.
The 42-year-old is said to have died in Miami of 'apparent suicide' as per Miami-Dade Police department, despite earlier reports from Belarus claiming a blood clot was the cause of death.