About David Madden (Jeopardy! contestant)
David Charles "Dave" Madden is an American game show contestant, academic competition organizer, and art historian. He is a former 19-day champion on Jeopardy! and holds the eighth-longest streak in Jeopardy! history. When Madden established his streak in 2005, it was the second-longest in Jeopardy! history, behind Ken Jennings. He defeated the IBM Watson computer during beta testing at IBM headquarters twice. Making his first appearance on the July 5, 2005, episode, Madden continued on a winning streak until September 19, winning a total of 19 games and $432,400. Madden first watched Jeopardy! with a babysitter when he was 11–12 years old. Madden's parents did not realize he was going to be on Jeopardy! until his first game aired. Team Brad won their first-round match and in the final episode, airing on March 5, 2019, won the tournament and the grand prize of $1,000,000, which was split between the three team members.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.