It is capitalized when it forms part of the proper noun. Example: Mario wants to watch the 2013 Wimbledon Tennis Championships.
James Medlycott has written: 'Bowls' -- subject(s): Bowling on the green 'Tennis' -- subject(s): Tennis '100 years of the Wimbledon tennis championships' -- subject(s): History, Wimbledon Championships, Wimbledon Tennis Tournament
Wimbledon
Australian French US (The Championships) Wimbledon
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Rafael Nadal
Wimbledon Championships Since 1877
Robinson's orange squash
The idea of eating strawberries and cream at tennis originated from the Wimbledon Championships, they have been serving strawberries and cream at The Championships for years. Other events and venues may have latched onto this tradition and adapted it but, Wimbledon is where the association comes from, it is now possible that they have become a symbol of not just Wimbledon but of tennis global, as Wimbledon is regarded as the most prestigious tennis competition on the world stage as The Championships have been going at The All England Lawn Tennis and Croquet Club since 1877.
The tournament ran from June 24 until July 8. It was the 36th Wimbledon Championships and the first Grand Slam tennis event of 1912.
The proper noun is spelled Wimbledon, the site of the UK tennis championships.
In Wimbledon "the open era", no englishman has won the title.