Yellow tennis balls were used for the first time at the Wimbledon Championships in 1986.
The 'predominately in white' rule was introduced at the Wimbledon Championships in 1963 while the 'almost entirely in white' rule was introduced in 1995.
The longest match in tennis history was played on Court 18 at the Wimbledon Championships in 2010.
The longest match in tennis history lasted 11 hours and 5 minutes.
The longest match in tennis history was between John Isner and Nicholas Mahut and John Isner won the match.
The final set of the longest match in tennis history lasted 8 hours and 11 minutes.
The final set score of the longest match in tennis history was 70-68.
John Isner served 113 aces in the longest match in tennis history.
The retractable roof was first used in Centre Court at the Wimbledon Championships in 2009.
The Australian Open was first played at the Warehouseman's Cricket Ground in St Kilda Road, Melbourne in 1905 as The Australasian Championships.
Tennis Australia is the governing body for the sport of tennis in Australia.
In 1988 Australian Open moved to its permanent home at Flinders Park (now Melbourne Park).
The Australian Open was not held between 1916 and 1918, and 1940 and 1945, because of international conflicts happening during that time.
Equal prize money started being awarded to both the men's and women's singles champions at the French Open in 2006.
Li Na won the 2011 French Open and became the first Chinese national to win a Grand Slam singles title.
The US Open became the first Grand Slam tournament to offer equal prize money to the men's and women's champions in 1973.
The National Tennis Center at Flushing Meadows in Queens, New York became the site of the US Open in 1978.
The USTA National Tennis Center facility was renamed the USTA Billie Jean King National Tennis Center in 2006.
Tennis rackets were made with wooden frames in the early days of tennis.
Tennis racket strings come in different diameters more commonly referred to as their gauge.
In the early days tennis racket strings were made with natural gut.
It is allowed to hit the ball around the net post in tennis.
The Wimbledon Championships were cancelled in 2020 due to public health concerns associated with the coronavirus epidemic.
The French Open was delayed in 2020 and started in September instead of May because of the coronavirus pandemic.
The inaugural ATP Cup was held in Australia in January 2020.
Serbia won the inaugural ATP Cup held in Australia in January 2020.
The Fed Cup was renamed the Billie Jean King Cup in September 2020.
Steffi Graf completed the Golden Slam by winning the Australian Open, French Open, Wimbledon, US Open, and Olympic gold medal in 1988.
Emma Raducanu was the first qualifier to win a Grand Slam singles title in the Open Era. She accomplished this feat by winning the US Open women's title in 2021.
John Isner is the ATP tennis player who has served the most aces in tennis history.
Alexander Zverev won the men's singles tennis gold medal at the Olympics held in Tokyo in 2021.
Roger Federer has two sets of twins(children). Two boys named Leo and Lenny. Two girls named Myla Rose and Charlene Riva.
Kooyong Lawn Tennis Club became the permanent home of the Australian Open in 1972 because of Melbourne attracting the biggest patronage.
The US Open was played on clay courts before being switched to hard courts in 1978.
