| Colorado State Open | |
| Founded: | 1891 |
| Location: | Colorado, United States |
| Venue: | Denver Athletic Club (1891-1906) Denver Country Club (1907-20, 1923-42, 1946-67) Denver City Park (1921-22, 44-45) Colorado Racquet Club (1968-83) Gates Tennis Center (1975-83) Country Club of Colorado(1984) Gates Tennis Center (1985-current) |
| Surface: | Hard |
| Website: | https://www.coloradostateopen.com/ |
The Colorado State Open[1] also known as the Colorado State Championships[2] is a combined men's and women's hard court tennis tournament founded in 1891 as the Rocky Mountain Tennis Championships.[3] The event was organised by the Western Lawn Tennis Association, the first championships was open to contestants from Colorade, New Mexico, Utah, and Wyoming.[4] The first tournament held at the Denver Athletic Club and was played on outdoor clay courts.[5] The current tournament is played on hard courts.
In 1891 the Rocky Mountain Tennis Championships were established.[6] The tournament was played on outdoor clay courts at the Denver Athletic Club, Denver, Colorado, United States.[7] In 1907 the tournament was moved to new venue the Denver Country Club and rebranded as the “Colorado State Championships”.[8] Between 1921 and 1922 the championships were moved to Denver City Park.[9] [10] In 1924 a women's event was added to the schedule.[11]
In 1942 the Colorado State Championships moved back to the Denver Country Club until 1945, when it moved back to Denver City Park.[12] In 1946 the championships moved back to Denver Country Club until 1967.[13] The championships were held in other locations, but moved to the new Gates Tennis Center facility consisting of twenty tennis courts in 1975.[14] That year the tournaments name was changed to the Colorado State Open Tennis Championships.[15] In 1988 the tournament was rebranded as the Colorado State Open.[16]