go for the fences

go for the fences

To put forth one's maximum amount of effort or energy (into or toward something); to act or perform with great intensity or effort. The phrase alludes to baseball, where one would send the ball to "the fences" by hitting a home run. I wasn't sure about their state-appointed lawyer at first, but I was well impressed when he went for the fences on day one of the trial.
See also: fence, go
Farlex Dictionary of Idioms.

go for the fences

in. to set extremely high goals and do whatever is needed to meet them. (Alludes to attempting to hit a home run against the fences of a baseball stadium.) We are going to go for the fences on this one. Don’t hold back on anything.
See also: fence, go
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • for (all) one's trouble
  • for all one’s trouble
  • for one’s trouble
  • for trouble
  • spare no effort to (do something)
  • make an effort (to do something)
  • an all-out effort
  • begathon
  • make every effort (to do something)
  • make every effort to do