Seven-time champion Serena Williams makes her singles comeback at Wimbledon on Tuesday, as Rafael Nadal continues his pursuit of a calendar Grand Slam.
American Williams, 40, plays France's Harmony Tan on Centre Court, 12 months on from tearing her hamstring in her first-round match at SW19.
Women's world number one Iga Swiatek opens play on the main show court against Croat Jana Fett from 13:30 BST.
Men's second seed Nadal, a two-time winner, then meets Francisco Cerundolo.
A 23-time Grand Slam singles champion, Williams made her long-awaited return to action in the doubles at Eastbourne last week alongside Ons Jabeur, after ending speculation over her future in the sport by accepting a Wimbledon wildcard.