In 2006, tennis legends Andre Agassi and Steffi Graf agreed to sell their luxurious Tiburon estate for $20 million, taking a reported $3 million loss. The 3.5-acre property featured a sprawling mansion, two swimming pools, a tennis court and stunning Golden Gate Bridge views. After nearly four years on the market, the couple reduced the asking price several times. High maintenance costs and the home’s dated interiors reportedly made selling difficult.