be anyone's/anybody's call

be anyone's/anybody's call

To be difficult or impossible to predict, as of an outcome. The top three competitors are so evenly matched that I really don't know who will win this race—it's anyone's call. Who will win the Science Fair is anybody's call—we'll have to see what the judges say.
See also: call
Farlex Dictionary of Idioms.
See also:
  • it's anyone's/anybody's call
  • anyone's/anybody's call
  • time alone will tell
  • time will tell
  • (only) time will tell
  • you never know
  • you never know with (someone or something)
  • in a dead heat
  • trade blows
  • you can never tell with (someone or something)