win (something) by a hair(redirected from winning 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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.