Ken is a very smart man. He knows his stuff... he appeared on Jeopardy 74 times before getting beaten on his 75th appearance. His total winning's on Jeopardy was an outstanding.. $2.52 million.
dono
The Jeopardy Archive does not list him as a contestant
No he did not
$10,000,000
On November 30 2004 Ken Jennings Lost to Nancy Zerg see related links There is also a link to Ken Jennings Jeopardy Archive Page
He was never tied. The next person has way less Jeopardy winnings
Watson
KEN JENNINGS
Ken Jennings. He holds the current record (as of September 2017) of 74 consecutive victories.
For the Contestants it was Brad Rutter and then Ken Jennings see related links Sony Pictures Television has made the most money for non contestants. Rutter will compete alongside Jennings in a special match against IBM's Watson in 2011.
Ken Jennings's total earnings on Jeopardy! are $3,022,700 ($2,520,700 over his 74 wins, a $2,000 second-place prize in his 75th appearance, and a $500,000 second-place prize in the Jeopardy! Ultimate Tournament of Champions).
It is not as much as you might suspect considering the number of episodes yet less than 50 contestants have won over $100,00 in non tournament games. If you would like you can total the winners who have earned over $50,000 on the related link. These do not include championship matches You might also look to see how often Ken Jennings name appears on the list of highest one day totals