Here are some of the people in the sports world celebrating birthdays on July 31:

Nick Bollettieri

Age: 81

Profession: Tennis Coach

Best Known For: Among the most successful tennis coaches of all-time, Nick Bollettieri has helped coach Andre Agassi, Jim Courier, Monica Seles, Maria Sharapova, Venus and Serena Williams, Martina Hingis and many more Grand Slam singles’ champions at his tennis academy in Bradenton, Florida.

Evonne Goolagong Cawley

Age: 61

Profession: Retired Tennis Player

Best Known For: A 14-time Grand Slam champion, Australian Evonne Goolagong Cawley won 704 singles matches in the 1970s. Ranked as the World No. 1 women’s tennis player for two weeks in 1976, Goolagong Cawley was inducted into the International Tennis Hall of Fame in 1988.

Mark Cuban

Age: 54

Profession: NBA Team Owner / Entrepreneur

Best Known For: After making billions of dollars from a series of business deals in the 1990s, businessman Mark Cuban bought the Dallas Mavericks of the NBA for $285 million in 2000. Under Cuban’s ownership, the team has become a perennial playoff contender and won its first NBA championship in 2011. Cuban has also attempted to purchase majority stakes in the Chicago Cubs, Texas Rangers and Los Angeles Dodgers. Cuban was a contestant on Season 5 of the reality TV competition ‘Dancing With The Stars.’

Dale Hunter

Age: 52

Profession: Retired NHL Player / NHL Coach

Best Known For: A former NHL All-Star, Dale Hunter was a hard-hitting center who amassed the second-most penalty minutes in league history while playing with the Quebec Nordiques, Washington Capitols and Colorado Avalanche from 1980 to 1999. Hunter replaced Bruce Boudreau as the head coach of the Capitols during the 2011-12 season. He resigned after the 2012 playoffs.

Kevin Greene

Age: 50

Profession: Retired NFL Player

Best Known For: A five-time Pro Bowl selection, Kevin Greene played linebacker and defensive end for the Los Angeles Rams, Pittsburgh Steelers, Carolina Panthers and San Francisco 49ers from 1985 to 1999. A pass rush specialist whose long blonde hair often flowed out of his helmet as he played, Greene recorded 160 sacks during his career — the highest total by a linebacker in NFL history. He currently serves as linebackers’ coach with the Green Bay Packers.

Scott Brooks

Age: 47

Profession: Retired NBA Player / NBA Coach

Best Known For: Scott Brooks is the head coach of the Oklahoma City Thunder of the NBA. He was NBA Coach of the Year in 2009-10 and guided the team to the NBA Finals in 2011-12. Prior to his coaching career, Brooks was a point guard in the NBA from 1998 to 1998.

Jonathan Ogden

Age: 38

Profession: Retired NFL Player

Best Known For: An 11-time Pro Bowl offensive tackle, Jonathan Ogden was one of the best offensive linemen in the NFL while playing for the Baltimore Ravens from 1996 to 2007. He was elected to the NFL’s 2000s All-Decade Team. Ogden was a member of the Ravens’ team that won Super Bowl XXXV. In his final year at UCLA, Ogden won the Outland Trophy as the nation’s best interior lineman.

Victoria Azarenka

Age: 23

Profession: WTA Tennis Player

Best Known For: Victoria Azarenka is the current World No. 1-ranked women’s tennis player. A native of Belarus, Azarenka won the 2012 Australian Open singles title and has won two Grand Slam mixed doubles titles. She has more than 300 career victories since turning pro in 2003.