Phil Mickelson says he needs to be responsible for the company he keeps off the golf course. In his first public appearance since he was linked to insider trading allegations, Mickelson said Wednesday he was disappointed to be involved in it. In a federal complaint, Mickelson was said to have paid off a debt to Las Vegas gambler Billy Walters with nearly $1 million that was unfairly made in an insider trading scheme involving Dean Foods. More...