The ATP World Tour Masters 1000 was a series of 9 tennis tournaments that are part of the Association of Tennis Professionals (ATP) tour, held annually throughout the year in Europe, North America and Asia.
The series constituted the most prestigious tournaments in men's tennis after the four Grand Slam events and the ATP World Tour Finals.
This year's Australian Open was the first Grand Slam event since that tournament's 2004 edition in which the women's singles and doubles were won by the top seeds, and the first Grand Slam event since the 1997 Wimbledon Championships in which the men's and women's singles and doubles were all won by the top seeds.
Maria Sharapova was the defending champion in women's singles, but lost in the final to Serena Williams.
At the 2012 French Open, Mahesh Bhupathi won a multiple slam set in Mixed Doubles, and Esther Vergeer won her multiple slam set in Women's Wheelchair Doubles.
It took place at the All England Lawn Tennis and Croquet Club in Wimbledon, London, United Kingdom, from 24 June to 7 July 2013.
Roger Federer and Serena Williams were the defending champions in singles events, but neither was able to repeat their success.
Andy Murray became the first man from Great Britain to win the singles title since Fred Perry in 1936.
It took place at the USTA Billie Jean King National Tennis Center, and ran from August 26 to September 9.
World Group Draw Following is a list of notable players (winners of a main tour title, and/or part of the ATP or WTA rankings Top 100 (singles) or Top 50 (doubles) for at least one week) who announced their retirement from professional tennis, became inactive (after not playing for more than 52 weeks), or were permanently banned from playing, during the 2013 season: