Serena Jameka Williams is an American professional tennis player. The Women's Tennis Association has ranked her world No. 1 in singles on eight separate occasions over the last 15 years from 2002 to 2017. She became the world No. 1 for the first time on July 8, 2002. On her sixth occasion, she held the ranking for 186 consecutive weeks, tying the record set by Steffi Graf for the most consecutive weeks as world No. 1 by a female tennis player. In total, she has been world No. 1 for 319 weeks, which ranks third in the Open Era among female players behind Graf and Martina Navratilova. Some commentators, players and sports writers regard her as the greatest female tennis player of all time. On April 19, 2017, she announced a hiatus from tennis until 2018 because of pregnancy.
Ana Ivanovic is a retired Serbian tennis player. She was ranked No. 1 in the world in 2008, after she had defeated Dinara Safina to win the 2008 French Open. She was also the runner-up at the 2007 French Open and the 2008 Australian Open. She also qualified for the annual WTA Tour Championships three times, in 2007, 2008 and 2014 and won the year-end WTA Tournament of Champions twice, in 2010 and 2011.
Jack Avon Harbaugh is a former American football player and coach. He is known for being the longtime head coach at Western Kentucky. He is also the father of the first pair of brothers to serve as NFL head coaches and the first pair of head coaching brothers to face off in a Super Bowl: John and Jim Harbaugh.