Fears grow for China's missing tennis star

• The allegations on Peng's social media page were removed earlier this month, and China's state-controlled media has suppressed all reporting on the case, AP reports.
• Tennis authorities have called for a full investigation into the allegations by the two-time Grand Slam doubles champion.
• Williams joins tennis stars including Naomi Osaka and Novak Djokovic who've drawn international attention to Peng's disappearance.

Driving the news: On Wednesday, China's state-owned broadcaster CGTN released an email purportedly from Peng, in which she claims she is fine and appears to deny her previous allegations.

• But her fellow tennis players, as well as the head of the Women's Tennis Association (WTA), have cast doubt on the email's authenticity.

What they're saying: "I am devastated and shocked to hear about the news of my peer, Peng Shuai," Williams tweeted.

• "I hope she is safe and found as soon as possible. This must be investigated and we must not stay silent. Sending love to her and her family during this incredibly difficult time.

• “Not sure if you’ve been following the news but I was recently informed of a fellow tennis player that has gone missing shortly after revealing that she has been sexually abused," Osaka wrote on Twitter. "Censorship is never ok at any cost.”
• "Honestly it's shocking that she's missing," Djokovic said, according to AFP. "There's not much more to say than to hope that she's ok and it's just terrible... I can imagine how her family feels, you know, that she's missing."

Worth noting: The WTA has called on Chinese officials to investigate Peng's sexual assault allegations.