win (something) by a hair

win (something) by a hair

To succeed or defeat someone in something by only a very narrow margin. Making huge gains during the final lap, the underdog rookie managed to overtake the reigning champion and win the race by a hair. We only won by a hair, but at least we got the conviction we were looking for.
See also: by, hair, win
Farlex Dictionary of Idioms.
See also:
  • win (something) by a neck
  • win (something) by a nose
  • win (something) by a whisker
  • win by a neck
  • win by a nose
  • edge out
  • triumph over
  • triumph over (one)
  • lap over
  • on a promise