He went on to reference her recently announced pregnancy, saying, “She gives 100% of herself to everything she does: as a friend, as a lover, and soon, as a mother.”
MORE: Pregnant Serena Williams Gracefully Dances in Her Met Gala Gown
Williams accidentally announced she was expecting her first child in April on Snapchat before deleting the pic. She plans to take maternity leave for the remainder of the 2017 tennis season.
For more from Williams, watch the clip below!