Richards has been scrutinized over earlier allegations of a hostile work environment, as well as inappropriate comments he made about women on a podcast he once hosted.
"The doctors said they hadn't seen this kind of positive result in their memory," the Jeopardy! host told People magazine. "Some of the tumors have already shrunk by more than 50 percent."
Over his 12-day winning streak, James Holzhauer now holds the top five slots for single-day winning records on the show. "You need to pick your spots and bet big," he tells NPR.
