doubles, or mixed doubles: Singles Kevin Anderson – Johannesburg (singles) Ivan Dodig – Zagreb (singles) Milos Raonic – San Jose (singles) Robin Haase – Kitzbühel (singles) Alexandr Dolgopolov – Umag (singles) Pablo Andújar – Casablanca (singles) Ryan Sweeting – Houston (singles) Andreas Seppi – Eastbourne (singles) Florian Mayer – Bucharest (singles) Janko Tipsarević – Kuala Lumpur (singles) Doubles Adil Shamasdin – Johannesburg (doubles) Robin Haase – Marseille (doubles) Leonardo Mayer – Buenos Aires (doubles) Alexandr Dolgopolov – Indian Wells (doubles) Simone Bolelli – Munich (doubles) Matthew Ebden – Newport (doubles) Ryan Harrison – Newport (doubles) Alex Bogomolov Jr. – Atlanta (doubles) Alexander Peya – Hamburg (doubles) Fabio Fognini – Umag (doubles) Mixed doubles Scott Lipsky – French Open (mixed doubles) Jürgen Melzer – Wimbledon Championships (mixed doubles) Jack Sock – US Open (mixed doubles) The following players defended a main circuit title in singles, doubles, or mixed doubles: Bob Bryan – Australian Open (doubles), Houston (doubles), Madrid (doubles) Mike Bryan – Australian Open (doubles), Houston (doubles), Madrid (doubles) Robin Söderling – Rotterdam (singles) Novak Djokovic – Dubai (singles) Robert Lindstedt – Casablanca (doubles), Båstad (doubles) Horia Tecău – Casablanca (doubles), Båstad (doubles) Rafael Nadal – Monte Carlo (singles), French Open (singles) Daniel Nestor – French Open (doubles), ATP World Tour Finals (doubles) Mardy Fish – Atlanta (singles) Andy Murray – Shanghai (singles) Roger Federer – Basel (singles), ATP World Tour Finals (singles) Rankings These are the ATP rankings, showing the race for the singles and doubles, and of the 2011 season, with number of rankings points, number of tournaments played, year-end ranking in 2010, highest and lowest position during the season (for singles and doubles individual only, as doubles team rankings are not calculated over a rolling year-to-date system), and number of spots gained or lost from the 2010 to the 2011 year-end rankings. Singles Number 1 ranking Doubles Prize money leaders Statistics leaders Best matches by ATPWorldTour.com Best 5 Grand Slam / Davis Cup Matches Best 5 ATP World Tour matches Point distribution Retirements and comebacks Following is a list of notable players (winners of a main tour title, and/or part of the ATP 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 2011 season: Yves Allegro (born 28 August