US TENNIS star Hailey Baptiste was in tears and had to retire from the French Open after she suffered an absolutely brutal knee injury.

It’s a sad end to the French Open for the No. 26 American.

NINTCHDBPICT001084221700US tennis star Hailey Baptiste’s left knee buckled during the French Open on Wednesday Credit: Instagram/tntsportsus NINTCHDBPICT001084221705Baptiste yelled in pain after the brutal on-court injury Credit: TNT Sports

Baptiste was hitting an inside-out forehand off her back foot against China qualifier Wang Xiyu when her left knee gave up on her.

The 24-year-old fell to the ground and instantly yelled in pain due to the injury.

The tearful Baptiste stayed down as doctors looked after her.

The Washington D.C. native’s father, Qasim, also ran onto the court to comfort her.

Fortunately, she was able to be helped off the court as her left leg was held up horizontally.

Baptiste was forced to retire as Wang advances to the next round.

Wang was serving for the first set at 5-4 before the incident.

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