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.

Serena Jameka Williams is an American former professional tennis player. Widely regarded as one of the greatest tennis players of all time, she was ranked world No.1 in singles by the Women's Tennis Association (WTA) for 319 weeks, including a joint-record 186 consecutive weeks, and finished as the year-end No.1 five times. She won 23 major women's singles titles, the most in the Open Era, and the second-most of all time. She is the only player to accomplish a Career Golden Slam in both singles and doubles.