Novak Djokovic Posts Photo of Leg Injury MRI After Boos from Fans at Australian Open

Novak Djokovic evidently took exception to the boos he heard after retiring from his semifinal match at the Australian Open.

Djokovic shared a photo of an MRI of his left hamstring taken on Saturday, calling out "sports injury 'experts'" in the process.

The 37-year-old retired after dropping the first set against Alexander Zverev with a hamstring injury suffered in his quarterfinal win over Carlos Alcaraz. He was booed by the crowd in attendance and responded by giving them a sarcastic two thumbs up on his way to the exit.

Zverev even addressed the boos aimed at Djokovic during his on-court interview after the match.

Djokovic didn't provide any additional context about the MRI, but he told reporters after retiring it was a muscle tear:

"I did everything I possibly can to manage the muscle tear that I had. Medications and the strap and the physio work helped to some extent today, [but] towards the end of that first set I just started feeling more and more pain. It was getting worse and worse. It was just too much to handle for me at the moment. I knew even if I won the first set it was going to be a huge uphill battle for me to stay physically fit enough to stay with him in the rallies for another, god knows, two, three, four hours. I don't think I had that, unfortunately, today in the tank. Unfortunate ending, but I tried."

This was a contentious Australian Open for Djokovic. He refused to do on-court interviews until he received an apology from Channel 9 News and broadcaster Tony Jones for "insulting and offensive comments" made by Jones on the air.

Jones heckled Djokovic fans during a Jan. 17 broadcast by mocking their chants with "Novak is overrated" and a "has-been."

Both parties issued apologies on Jan. 19, with Jones offering his during a news broadcast by saying he considered it to be an attempt at "humor" that missed the mark:

"Having said that, I was made aware on Saturday morning, from Tennis Australia via the Djokovic camp, that the Djokovic camp was not happy at all with those comments. As such, I immediately contacted the Djokovic camp and issued an apology to them—this was 48 hours ago—for any disrespect that Novak felt, that I had caused. And as I stand here now, I can only stand by that apology to Novak if he felt any disrespect, which quite clearly he does."

The injury extended Djokovic's streak of consecutive grand slam tournaments without a win to five. It's his longest streak without winning at least one of the four major ATP events since 2016 to '18 (eight).

It's unclear how much time Djokovic might miss as a result of the injury. The French Open is the next grand slam on the calendar, but that doesn't start until May 25.