REBUS PUZZLES LXXI

The solution to this rebus is hinted at in the verse below.

O  NE

It's 2020! Can't be right,
For that's the year, but not my sight.
I hit my ball from off the tee,
Where did it go? Where could it be?
And so I walk up to the green,
Alas, by ball still can't be seen.
Once more I search. No sign at all,
But then it dawns - - - it's a __________!

Answer:

Hole in one

Credit:
The Enigma 
NPL Magazine
January, 2020
ANDREAS