If a hypothetical company has no shot on "Shark Tank," a hypothetical movie was practically guaranteed to fail. Immediately ... him "why this isn't the worst product I've ever seen," to which ...

While some businesses leave the tank with a big deal and a bright future, others, well, they crash and burn. We’re diving into the 20 worst Shark Tank deals ever.

Hundreds of entrepreneurs have pitched their companies on "Shark Tank" since the show debuted in 2009, but some of the most memorable pitches are the worst ones. They stand out for different reasons.

Mark Cuban has seen it all during his long tenure on Shark Tank. With more than a decade ... But one deal stands out as his worst investment, a misstep he describes as "my biggest beating." ...

When Bad Investments Happen to Good Sharks O'Leary doesn't shy away from admitting that his worst Shark Tank deal still stings. While keeping the company's name under wraps for legal reasons ...