Jeopardy! Masters season 3 is about to begin, so fans should take note of the show's premiere date and how to watch it. Hosted by Ken Jennings, Jeopardy! Masters season 3 welcomes back nine of the game show's highest-ranked champions. For the first time in its three seasons, the show will have nine contestants instead of six, and they'll compete for the $500,000 grand prize, the coveted Alex Trebek Trophy, and the title of Jeopardy! Masters Champion.