A grass court is one of the types of tennis court on which the sport of tennis, originally known as "lawn tennis", is played. Grass courts are made of grasses in different compositions depending on the tournament.
While grass courts are more traditional than other types of tennis courts, they are far less commonly used today compared to hard courts and clay courts. There are several disadvantages with grass courts: in particular, they are much more expensive to maintain compared to other surfaces. Also, grass courts (in the absence of suitable covers) are usually unplayable for the day if rain appears, as grass becomes very slippery when wet and will not dry for many hours. In contrast, play on a hard court can resume in 30 to 120 minutes after the end of rain, and clay courts can even remain playable in light rain. Furthermore, since most of the foot traffic during a tennis match occurs repetitively over a small surface area of the court, even with the best maintenance a grass surface will quickly display obvious signs of wear if played regularly, which is unavoidable during a major tennis tournament.
