TORONTO—Stacey Allaster, the former-CEO of the Women’s Tennis Association (WTA) who negotiated millions of dollars of rights deals with China, told Reuters on Monday the tennis world has put Peng Shuai’s health and safety ahead of business. As the WTA and ATP Tour seasons draw to a close this week with finals in Mexico and Italy, the tennis spotlight has focused on China with the women’s governing body on Sunday calling on the Chinese government to investigate allegations of sexual assault made by Peng against a former vice-premier. Peng, a former-top ranked doubles player and one of China’s biggest sporting stars, alleged on her Weibo social media account on Nov. 2 that Zhang Gaoli, who used to be a member of the Politburo Standing Committee—China’s top decision-making body—coerced her into sex and they later had an on-off consensual relationship. Peng, 35, said in the post, which was deleted about half …