Former champions Ken Jennings and Brat Rutter will take on the specially-designed computer.
Jennings won a record of 74 consecutive games in 2004 and 2005. Rutter won the most money by a "Jeopardy!" contestant.
To prepare for the competition, Watson played more than 50 games against Tournament of Champions contestants. It also passed the "Jeopardy!" contestant test.
