Tennis ball

A tennis ball is a ball designed for the sport of tennis. Tennis balls are yellow at major sporting events, but in recreational play can be virtually any color. Tennis balls are covered in a fibrous felt which modifies their aerodynamic properties, and each has a white curvilinear oval covering it.

Specifications

Modern tennis balls must conform to certain criteria for size, weight, deformation, and bounce criteria to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as 6.54–6.86 cm (2.57–2.70 inches). Balls must have masses in the range 56.0–59.4 g (1.98–2.10 ounces). Yellow and white are the only colors approved by the ITF, and most balls produced are a fluorescent yellow known as "optic yellow", first introduced in 1972 following research demonstrating they were more visible on television.

Tennis balls are filled with air and are surfaced by a uniform felt-covered rubber compound. The felt delays flow separation in the boundary layer which reduces aerodynamic drag and gives the ball better flight properties. Often the balls will have a number on them in addition to the brand name. This helps distinguish one set of balls from another of the same brand on an adjacent court.

Jamie Foxx

Eric Marlon Bishop (born December 13, 1967), known professionally as Jamie Foxx, is an American actor, singer, and comedian. He won an Academy Award for Best Actor, BAFTA Award for Best Actor in a Leading Role, and Golden Globe Award for Best Actor in a Musical or Comedy, for his work in the 2004 biographical film Ray. The same year, he was nominated for the Academy Award for Best Supporting Actor for his role in the action film Collateral.

Other prominent acting roles include the title role in the film Django Unchained (2012), the supervillain Electro in The Amazing Spider-Man 2 (2014) and William Stacks in the 2014 version of Annie. Foxx also starred in the 1990-1994 sketch comedy show In Living Color and his own television show from 1996 to 2001, the sitcom The Jamie Foxx Show, in which he played Jamie King Jr.

Foxx is also a Grammy Award-winning musician, producing four albums which have charted highly on the US Billboard 200: Unpredictable (2005), which topped the chart, Intuition (2008), Best Night of My Life (2010), and Hollywood: A Story of a Dozen Roses (2015).

Serena Williams

Serena Jameka Williams (born September 26, 1981) is an American professional tennis player who is ranked No. 1 in women's singles tennis. The Women's Tennis Association (WTA) has ranked her world No. 1 in singles on six separate occasions. She became the world No. 1 for the first time on July 8, 2002, and achieved this ranking for the sixth time on February 18, 2013. She is the reigning champion of the French Open, Wimbledon and Olympic women's singles and doubles. Williams is popularly regarded as the greatest female tennis player of all time.

Williams holds the most major singles, doubles, and mixed doubles titles combined amongst active players, male or female. Her record of 36 major titles puts her fifth on the all-time list and second in the open era with: 21 in singles, 13 in women's doubles, and two in mixed doubles. She is the most recent player, male or female, to have held all four major singles titles simultaneously (2002–03 and 2014–15), the fifth woman ever to do so and only the third player, male or female, to achieve this record twice after Rod Laver and Steffi Graf. She is also the most recent player, together with her sister Venus Williams, to have held all four Grand Slam women's doubles titles simultaneously (2009–10).

Miley Cyrus

Miley Ray Cyrus (born Destiny Hope Cyrus; November 23, 1992) is an American singer, songwriter, and actress. Born and raised in Franklin, Tennessee, she held minor roles in the television series Doc and the film Big Fish in her childhood. Cyrus became a teen idol for her portrayal of the starring character Miley Stewart in the Disney Channel television series Hannah Montana in 2006; her father Billy Ray Cyrus additionally starred in the show. Cyrus subsequently signed a recording contract with Hollywood Records; her debut studio album Meet Miley Cyrus (2007) was certified quadruple-platinum by the Recording Industry Association of America (RIAA) for exceeding four million shipments. Cyrus released her second album Breakout and launched her film career as a voice actress in the animated film Bolt in 2008.

Cyrus starred in the feature film Hannah Montana: The Movie and began cultivating a maturing image with her EP The Time of Our Lives in 2009. In 2010, she released her third album Can't Be Tamed, which stands as the lowest-selling record of her career, and starred in the coming-of-age film The Last Song. During production of the movie, she began an on-again, off-again relationship with her co-star Liam Hemsworth. Cyrus focused on her acting career with several television and film appearances in 2011 and 2012. Her sexually explicit behavior generated widespread controversy while promoting her fourth album Bangerz (2013), her first under her recording contract with RCA Records. Cyrus' independently-released fifth studio album Miley Cyrus & Her Dead Petz (2015) deviated from her traditional pop style for more psychedelic experimentation.