Salary/Winnings: $2.8m Endorsements: $48m Phil Mickelson recently lost $5,000 in a bet with a 17-year old semi-pro golfer, but that shouldn't hurt the big American's bank balance too much, if his continued success in the financial realm is anything to go by. He, like Tiger Woods, didn't win a competition in 2015, but still scooped $2.8m in winnings (a sizeable chunk of which stemmed from a runners-up spot in the Masters). Mickelson continues to draw the big bucks in terms of endorsement deals, reaping the benefits of partnerships with Callaway, Barclays, Rolex, and Amgen - to name but a few. Despite his waning prominence in the sport, he remains a beloved public figure particularly in his home country.