giant killer

noun

1. a person, sports team, etc, that defeats an apparently superior opponent

Example Sentences

Eagles backup running back Boston Scott has been dubbed the “Giant Killer” in Philadelphia for his uncanny play against New York.

From Seattle Times

Not looking that way now, but the Volunteers have giant killer potential if everything clicks.

From Seattle Times

Arkansas was the next giant killer, taking down reigning national champion and West Region No. 1 seed Kansas in the second round.

From Washington Times

Arkansas was the next giant killer, taking down reigning national champion and West Region No. 1 seed Kansas in the second round.

From Seattle Times

“If you had asked me 30 years ago, ‘Can we be confident we won’t be wiped out by a giant killer asteroid a week from next Tuesday?’

From Scientific American