Tom Hicks
Hicks is one of the worst sports owners in history because he made mistakes with every franchise he owned. One of his most infamous decisions saw him commit hundreds of millions to Alex Rodriguez. However, this meant that the Texas Rangers didn’t have enough money to spend on the rest of their roster.

Meanwhile, Liverpool fans loath him because he almost ran the Premier League side into the ground. Hicks and his partner, George Gillette, left the club in debt and in a terrible league position. Then they tried to sue the team after they lost control. It was a disastrous episode and one that sums up Hicks as an owner (via Liverpool Echo).