in one’s clutches vs underdog

in one’s clutches

underdog

noun
  • A high swing wherein the person pushing the swing runs beneath the swing while the person being pushed is at the forward limit of the arc. 

  • Somebody at a disadvantage. 

  • A competitor thought unlikely to win. 

How often have the words in one’s clutches and underdog occurred in a corpus of books? (source: Google Ngram Viewer )