The Olympics are about to begin.
It will be interesting to see how things turn out.
Here is our idiom for today; back to the drawing board.
This means to start something again from the beginning because things are not working out like you thought.
We have to go back to the drawing board because our ideas on how to solve the problem, failed.
The inventors of the airplane had to go back to the drawing board on many occasions because their designs failed many times.
We've looked at every possible angle and every time we get the same results. I guess it's time to head back to the drawing board.