Lewis Hamilton has responded to rumours linking his close friend Serena Williams to a return to professional tennis.<br>The 44-year-old was ranked as the world No. 1 in women's singles by the Women's Tennis Association for 319 weeks, which is the third-most of all time. She has 73 WTA Tour-level singles titles to her name, including 23 major women's singles titles.<br>Williams retired in September ...<a class='more' href='https://www.motorsport.com/f1/news/lewis-hamilton-urges-serena-williams-to-return-to-tennis-amid-comeback-rumours/10783543/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>