Naomi Osaka will miss the remainder of the WTA tour due to a back injury. The Hong Kong Open set to begin on Oct. 28 announced on its social media channels on Monday that the four-time Grand Slam singles champion is not only withdrawing from the tournament but also ending her season early.

After splitting the first two sets, Osaka withdrew before the final set due to a back injury. She later lightheartedly shared on social media that she had sustained the issue during training. "I locked my back up during practice earlier and honestly wasn't sure if I could even play but I just wanted to try,

The 27-year-old has reportedly ruptured abdominal muscles, but Hong Kong tennis chiefs have yet to hear from Japanese star.