give you a run for your money

N the category “What Do You Know?”, for $1 million: This four-year-old upstart the size of a small R.V. has digested 200 million pages of data about everything in existence and it means to give a couple of the world’s quickest humans a run for their money at their own game.

The question: What is Watson?

give you a run for your money

to be as good at something as someone who is known to be extremely good He was a very good actor and could have given any professional a run for his money.