Jeopardy! Season 5 Show #965, 1988 Tournament of Champions quarterfinal game 5. Season 5, episode 50 Show #965, 1988 Tournament of Champions quarterfinal game 5. November 11, 1988 Today’s Contestants: Ron Trigueiro vs. Mark Lowenthal vs. Leah Greenwald Previous episode Show #964, 1988 Tournament of Champions quarterfinal game 4. Next episode Show #966, 1988 Tournament of Champions semifinal game 1.