The category heading cards have a more rectangular shaped design (but with the edges still rounded), as opposed to previous seasons.
This is the last full season to have the 1984-1990 KingWorld "Stars and Stripes" logo at the end of each episode; the early episodes of the next season have this logo, before changing over to the 1990-1998 KingWorld "Spotlights" logo.
Alex Trebek started wearing glasses in this season.
September 1989[]
September 4, 1989: Season 6 premieres.
September 12, 1989: Bob Blake sets a new five-day winnings record of $82,501. Because he exceeded the then-winnings cap of $75,000, the excess $8,201 was donated to OxFam.
October 1989[]
October 30, 1989: Steve Berman retires undefeated with $48,800.
November 1989[]
November 6-17, 1989: The Tournament of Champions airs.
November 17, 1989: Tom Cubbage became the only college winner to win the Tournament Of Champions.
November 27, 1989: Lisa Guay retires undefeated with $42,600.
December 1989[]
December 25, 1989: Jeff Bandman retires undefeated with $44,501.
January 1990[]
January 15, 1990: Frank Spangenberg sets a new one-day record of $30,600, and a new 5-day winnings record of $102,597. This reran on July 23, 2020 as part of the Jeopardy! Vault episode from the first decade. Like Bob Blake before him three months earlier, he exceeded the winnings cap, with the excess $27,597 going to the Missionaries of Charity in New York City.
February 1990[]
February 5-16, 1990: The Teen Tournament airs.
February 27, 1990: Erik Larsen retires undefeated with $54,400.
March 1990[]
March 8, 1990: Elaine Zollner retires undefeated with $52,800.
