"Jeopardy" comes to Capitol Hill. What could go wrong?

Matthews got the biggest round of applause of the three contestants when he was introduced to the 2,000-strong audience at DAR Constitution Hall and was a favorite to win among the press corps at the event.

However, the MSNBC host struck out during the rehearsal, finishing with zero points after losing Final Jeopardy. Under the category “21st Century News,” with the clue, “Discovered in 1930, in 2006 this was downgraded to a ‘dwarf,’” Matthews answered, “What is a midget?” to wild laughter from the audience.

Gibbs and O’Leary both answered correctly, “Pluto,” giving them $18,799 after the first rehearsal of the day.