1. Getting involved in a sex scandal
If not legal issues, getting involved in a sex scandal can be quite expensive for celebrities. In 2010, Tiger Woods, LeBron James and Phil Mickelson, the three highest-paid American athletes reportedly made more than seven times from their endorsements than from their winnings and salaries that was around $147 million. However, after Tiger Woods was exposed for being involved in marital infidelity, his earnings from endorsements reduced from $100 million (2009) to $54.5 million (2012).