The “Calendar-year Grand Slam” or “Calendar Slam” is a tennis term for a player who wins all four major championships in a single calendar year.

There are two ways to win a Grand Slam in doubles: either as a team or as a player with different partners. While a “non-calendar-year Grand Slam” is defined as winning all four major championships in the same calendar year, a “Career Grand Slam” is defined as winning all four major championships at any point in one’s career.

Ken Rosewall
Ken Rosewall

Annually, the four most prominent professional tennis tournaments in the world compete in the Grand Slam events, which are also known as majors.

Among men, they offer the highest ranking points, prize money, media attention, the strongest and largest field, and the longest matches in terms of both time and money (best of five sets, best of three for the women).

Who is the Oldest Person to win a Grand Slam?

After beating Malcolm Anderson 7-6 6-3 7-5 to win the Australian Open in 1972, Ken Rosewall became the oldest grand slam winner ever by winning the tournament.

He won the title at the age of 37 years, 2 months, and 1 day, making him the oldest champion in history. Ken is a former professional and top-ranked amateur tennis player from Australia.

As a player, he won a record 23 majors, including eight Grand Slam singles championships and a record 15 Pro Slam singles titles before the Open Era; in total, he made 35 final appearances in majors.

In 1963, he won the Professional Grand Slam. Men’s doubles legend Rosewall won 24 majors in a row. For his efforts in the sport, he has won nine Grand Slam singles titles and 15 Pro Slam doubles trophies, including a lifetime Grand Slam.


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