Fans have accused Jannik Sinner of stealing a picture of himself preparing for the US Open after he failed to credit the photographer on social media.

World No. 6 Sinner has had a successful time on the North American swing so far. Earlier this month, he won his first-ever ATP Masters 1000 title at the National Bank Canadian Open in Toronto.

Now, he is hoping to have a deep run at this year's US Open, where he will face Yannick Hanfmann in the opening round. Last year, the Italian made it to the quarter-finals before being ousted by eventual champion Carlos Alcaraz.

Ahead of his campaign at Flushing Meadows, Sinner posted a picture of himself practicing on the courts with the caption "NYC".

However, a fan then revealed that they took the photo, saying they captured it during the US Open fan week before posting it on their social media.

"@janniksin photographed by me practicing for the 2023 @usopen, during fan week #USOpen #USOpen2023. Photo was originally posted on my Instagram," they wrote on X, formerly known as Twitter.

Following this, other fans expressed their outrage and accused the 21-year-old of stealing someone else's photo.

"Nah cause how are you a multimillionaire but you steal peoples pictures and crop their watermarks and post without credit??? rat CONFIRMED," one wrote.

Moreover, another accused him of 'erasing female creators.'

"Sad that you use pictures without crediting the photographers! please stop erasing female creators and give them credit!" commented another.

However, other commenters took the opportunity to wish Sinner well at the New York major, with many expressing their hope for him to come away with his maiden Grand Slam title.

"Just win your first Grand Slam. Go for it #USOpen," wrote one.

"Good luck champ. Hope you go all the way," added another.