The chairman was worried about the safety of the person.
Steve Simon, chief of the Women's Tennis Association, says that a video showing Chinese player Peng Shuai out with friends is not enough evidence of her safety.
The Chinese state-affiliated media posted two clips on Saturday of a supposedly dinner with her coach and friends.
It's positive to see her, but it's unclear if she's free to make her own decisions without being coerced or interfered with.
Since making sexual assault allegations against a former China vice-premier two weeks ago, Peng has not been in contact with the WTA.
Simon said on Friday that there has been no confirmation if the Chinese Tennis Association has told the governing body of the women's professional tour that Peng is safe.
The editor of the Global Times posted the clips of Peng which he said were filmed this weekend.
The video content clearly shows they were shot on Saturday, Beijing time, said Hu Xijin.
The authenticity of the videos was questioned by Kerry Allen.
She said it looked like a date had been obscured in the video.
Simon said he was glad to see the videos released by China state-run media that appeared to show Peng Shuai at a restaurant in Beijing.
This video alone is not enough.
I remain concerned about the health and safety of Peng Shuai and that the allegation of sexual assault is being swept under the rug.
Our relationship with China is at a crossroads and I have made it clear what needs to happen.
The tournaments are going to be pulled out of China.
Two Grand Slam titles have been won by Chinese Taipei's Hsieh Su-wei and former world number one doubles player, Peng.
She achieved a career-high singles ranking of 14 in 2011.
Since she said she was forced into a sexual relationship with a former China vice-premier, fears for her safety have increased.
The allegations were deleted from China's internet after they were made on Weibo.
It is the first time that such a claim has been made against a Chinese political leader.
Roger Federer is one of many top players who have spoken out about the situation.
The tennis world is united for her, said 20-time Grand Slam champion Roger Federer.
I hope she will give me good news soon.
People across tennis, as well as other past and present players, coaches and journalists, have been demanding answers about the location of Peng.
Many have been using the #WhereIsPengShuai on their social media accounts.
Wimbledon said it was working in support of the WTA's efforts to establish her safety and was united with the rest of tennis in the need to understand that she is safe.
