{{subst:requested move
| current1 = 1912 World Hard Court Championships – Mixed Doubles
| new1 = 1912 World Hard Court Championships – Mixed doubles
| current2 = 2005 AIG Japan Open Tennis Championships – Women's Doubles
| new2 = 2005 AIG Japan Open Tennis Championships – Women's doubles
| current3 = 2021 Aberto da República – Men's Doubles
| new3 = 2021 Aberto da República – Men's doubles
| current4 = 2010 Beijing International Challenger – Men's Singles
| new4 = 2010 Beijing International Challenger – Men's singles
| current5 = 1969 New South Wales Open – Women's Singles
| new5 = 1969 New South Wales Open – Women's singles
| current6 = 2009 US Open – Wheelchair Men's Doubles
| new6 = 2009 US Open – Wheelchair men's doubles
| current7 = 2019 Wimbledon Championships – Wheelchair Quad Doubles
| new7 = 2019 Wimbledon Championships – Wheelchair quad doubles
| current8 = 2015 Australian Open – Wheelchair Women's Doubles
| new8 = 2015 Australian Open – Wheelchair women's doubles
| current9 = 2011 French Open – Legends Under 45 Doubles
| new9 = 2011 French Open – Legends under 45 doubles
| current10 = 1915 U.S. National Championships – Men's Singles
| new10 = 1915 U.S. National Championships – Men's singles
| current11 = 1958 Wimbledon Championships – Girls' Singles
| new11 = 1958 Wimbledon Championships – Girls' singles
| current12 = 2016 French Open – Legends Over 45 Doubles
| new12 = 2016 French Open – Legends over 45 doubles
| current13 = 1962 U.S. National Championships – Women's Singles
| new13 = 1962 U.S. National Championships – Women's singles
| current14 = 2007 Sony Ericsson Open – Boys' Singles
| new14 = 2007 Sony Ericsson Open – Boys' singles
| current15 = 2019 Wimbledon Championships – Senior Gentlemen's Invitation Doubles
| new15 = 2019 Wimbledon Championships – Senior gentlemen's invitation doubles
| current16 = 1930 French Championships – Seniors Over 40 Singles
| new16 = 1930 French Championships – Seniors over 40 singles
| current17 = 2018 Wimbledon Championships – Ladies' Invitation Doubles
| new17 = 2018 Wimbledon Championships – Ladies' invitation doubles
| current18 = 2018 Wimbledon Championships – Gentlemen's Invitation Doubles
| new18 = 2018 Wimbledon Championships – Gentlemen's invitation doubles
| current19 = 2017 Wheelchair Doubles Masters – Quad Doubles
| new19 = 2017 Wheelchair Doubles Masters – Quad doubles
| reason = These are a random sample of about 5000 page titles with over-capitalized sub-event subtitles, all of which are included by extension. To make tennis events internally consistent, and consistent with other sports (e.g. table tennis, badminton, bowls, etc.), and consistent with title and style guidelines, these subtitles should be changed from title case to sentence case, since things like "men's singles" and "women's doubles" are overwhelmingly more often lowercase in sources, in sentence context (most capped uses are in title and heading contexts). Links to prior and ongoing relevant discussions, and a complete list, will be added below as time permits.
}}
