it's a toss-up

it's a toss-up

It is a situation in which the outcome cannot be predicted or a decision between two things is very close. I don't know which team will win. Both have done so well this season that it's a real toss-up. Should I take the entry level position, or go back to school? It's a toss-up in my mind.
Farlex Dictionary of Idioms.

It's a toss-up.

Inf. It's hard to tell the winner, and it could be won by either player or either team. The game's almost over, and it's a toss-up.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • be careful what you wish for(, it might (just) come true)
  • it ain't over till/until it's over
  • it's not over till it's over
  • reckon upon (someone or something)
  • it's not over till/until the fat lady sings
  • it ain't over till/until the fat lady sings
  • it ain't/it's not over till the fat lady sings
  • it isn't over till the fat lady sings
  • it isn't over till/until the fat lady sings
  • it isn't over until the fat lady sings
References in periodicals archive
IT'S a toss-up whether a van is more useful than a pick-up truck or the other way around.
(The nuptials could be postponed until 2006, John's spokesman said after the initial April announcement.) It's a toss-up as to whether The Buzz is more anxious to see what he'll wear or to hear what he'll say at the reception.
it's a toss-up between handmaid's knee and carpet burns.