Being a superstar athlete sure pays. Between their contracts, endorsement deals and signature apparel, they sure have plenty of chances to bank on their popularity.It takes plenty of hard work, skill, management, and on-field success before athletes become a brand of their own.But over the decades, we have seen many of them from various sporting backgrounds like tennis, football, golf, basketball, etc. parlay their careers into enormous fortunes.Bleacher Report@BleacherReportCristiano Ronaldo, Leo Messi and David Beckham are among the highest-paid athletes of all time 💰 @brfootball11:28 AM · Nov 4, 2021104421117Cristiano Ronaldo, Leo Messi and David Beckham are among the highest-paid athletes of all time 💰 @brfootball https://t.co/PcfZnjwHJHA list featuring the highest paid athletes of all-time was released recently, and here are those who made the cut:#12 David Beckham (Football) - $1.05 billionDavid BeckhamWe start off with the 'fashion icon' of football. He is remembered for his trend-setting hairstyles and funky outfits more than his playing career, which was although pretty successful too.Plying his trade with top sides like Manchester United, AC Milan, PSG, Real Madrid and LA Galaxy saw him earn big bucks. But like every other top athlete, he drew way more through lucrative sponsorship deals.#11 Phil Mickelson (Golf) - $1.08 billionPhil MickelsonSpeaking of deals, Phil Mickelson pitches for Amgen, ExxonMobil, KPMG, Rolex, Grayhawk and the Greenbrier among others. This accounts for most of his $1.08 billion wealth.When it comes to earnings through golf, he ranks second on the PGA Tour's all-time list behind only Tiger Woods. He has racked up close to $95 million in career prize money.#10 Roger Federer (Tennis) - $1.12 billionRoger FedererThere's only one billionaire in tennis, and it's not surprising to see that it's Roger Federer. The Switzerland international is an all-time legend with the joint-most Grand Slam titles (20) and second most career titles in the Open Era.Kevin William David@kevinwdavidRoger Federer is the first tennis billionaire.$130 million - Official prize money.$900 million - from sponsorships & endorsements. Joins Tiger Woods, Floyd Mayweather, LeBron James, Cristiano Ronaldo and Lionel Messi to earn $1 billion during their playing career.8:49 AM · Aug 30, 2021346Roger Federer is the first tennis billionaire.$130 million - Official prize money.$900 million - from sponsorships & endorsements. Joins Tiger Woods, Floyd Mayweather, LeBron James, Cristiano Ronaldo and Lionel Messi to earn $1 billion during their playing career. https://t.co/EsRuCvIE7LHe's made $130 million through prize money, second only to Novak Djokovic, while the rest have come from off-the-court endorsements. According to Forbes, he currently earns a whopping $90 million a year.#9 Michael Schumacher (Formula One) - $1.13 billionMichael SchumacherThe German racer's health is still precarious after a 2013 skiing incident dealt him with a severe brain injury that even left Schumacher in a coma. But back in his prime, the F1 titan was a force to be reckoned with.His on-track accomplishments not only saw him lift numerous titles, but also take home hefty cheques. In fact, he's one of only six athletes to feature on Forbes' highest-paid list since 1990.