Even without Mickelson's testimony, the prosecution believed that his trading in Dean Foods stock represented powerful incriminating evidence against Walters. Brooke Cucinella, one of the prosecutors, said in her closing argument, "When [Walters] knew he had a sure winner, he let his friends in on the action. In the days leading up to the spinoff, the defendant told Mike Luce [president of The Walters Group and a friend] and Phil Mickelson to get in on Dean Foods' stock. Now, we don't know if he told them the source of the information. But you know that Mickelson, at least, thought that the information he was getting from Walters was good enough to invest over $2 million in Dean Foods stock, some of it in his children's accounts. Mickelson had never purchased Dean Foods stock before—not once. The phone records show you that Walters and Mickelson were texting repeatedly on the days leading up to Davis' visit to the Walters' home, before he even got there. The defendant knew by then that the spinoff was looking good and that things were on track for Aug. 7. And he told Mickelson that the trade was a winner. Now, you know that on Aug. 8, Luce and Mickelson sold their shares. Mickelson made just under $1 million—money that ultimately he transferred right back to the defendant because of a gambling debt."